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795 vulnerabilities by Nextcloud
CERTFR-2026-AVI-1283
Vulnerability from certfr_avis - Published: 2026-10-09 - Updated: 2026-10-09
De multiples vulnérabilités ont été découvertes dans les produits Nextcloud. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, un déni de service à distance et une atteinte à la confidentialité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Nextcloud | N/A | Team Folders versions 21.x antérieures à 21.0.8 | ||
| Nextcloud | Server | Server versions 33.0.x antérieures à 33.0.6 | ||
| Nextcloud | Server | Server versions 34.0.x antérieures à 34.0.1 | ||
| Nextcloud | N/A | Team Folders versions 20.x et antérieures à 20.1.15 | ||
| Nextcloud | N/A | Collectives versions antérieures à 4.4.1 | ||
| Nextcloud | N/A | Team Folders versions 14.x antérieures à 14.0.12 | ||
| Nextcloud | N/A | Team Folders versions 15.x et antérieures à 15.3.13 | ||
| Nextcloud | N/A | Team Folders versions antérieures à 13.1.8 | ||
| Nextcloud | N/A | Team Folders versions 18.x et antérieures à 18.1.14 | ||
| Nextcloud | N/A | Team Folders versions 16.x antérieures à 16.0.16 | ||
| Nextcloud | N/A | Team Folders versions 19.x antérieures à 19.1.19 | ||
| Nextcloud | N/A | Team Folders versions 17.x antérieures à 17.0.16 | ||
| Nextcloud | N/A | Team Folders versions 22.x antérieures à 22.0.1 | ||
| Nextcloud | Server | Server versions 32.0.x antérieures à 32.0.12 pour nextcloud | ||
| Nextcloud | N/A | files_lock versions 33.0.x antérieures à 33.0.6 |
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Team Folders versions 21.x ant\u00e9rieures \u00e0 21.0.8",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.6",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.1",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 20.x et ant\u00e9rieures \u00e0 20.1.15",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Collectives versions ant\u00e9rieures \u00e0 4.4.1",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 14.x ant\u00e9rieures \u00e0 14.0.12",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 15.x et ant\u00e9rieures \u00e0 15.3.13",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions ant\u00e9rieures \u00e0 13.1.8",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 18.x et ant\u00e9rieures \u00e0 18.1.14",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 16.x ant\u00e9rieures \u00e0 16.0.16",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 19.x ant\u00e9rieures \u00e0 19.1.19",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 17.x ant\u00e9rieures \u00e0 17.0.16",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 22.x ant\u00e9rieures \u00e0 22.0.1",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.12 pour nextcloud",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "files_lock versions 33.0.x ant\u00e9rieures \u00e0 33.0.6",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-82985",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-82985"
},
{
"name": "CVE-2026-68493",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-68493"
},
{
"name": "CVE-2026-77169",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77169"
},
{
"name": "CVE-2026-77165",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77165"
},
{
"name": "CVE-2026-77166",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77166"
}
],
"initial_release_date": "2026-10-09T00:00:00",
"last_revision_date": "2026-10-09T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1283",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-10-09T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Nextcloud. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Nextcloud",
"vendor_advisories": [
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-f99w-3pm7-v4cv",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-f99w-3pm7-v4cv"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-4vpp-fp9q-9g23",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4vpp-fp9q-9g23"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-5gv7-hw69-w6px",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5gv7-hw69-w6px"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-9mjh-89xm-hcqw",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9mjh-89xm-hcqw"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-22w9-gpgv-pcgc",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-22w9-gpgv-pcgc"
}
]
}
CERTFR-2026-AVI-1198
Vulnerability from certfr_avis - Published: 2026-09-17 - Updated: 2026-09-17
Une vulnérabilité a été découverte dans Nextcloud Server. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Nextcloud | Server | Server versions 33.0.x antérieures à 33.0.7 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 30.0.x antérieures à 30.0.17.12 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 23.0.x antérieures à 23.0.12.38 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 28.0.x antérieures à 28.0.14.20 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 24.0.x antérieures à 24.0.13.37 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 31.0.x antérieures à 31.0.14.8 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 25.0.x antérieures à 25.0.13.32 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 32.0.x antérieures à 32.0.13 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 29.0.x antérieures à 29.0.16.19 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 22.x antérieures à 22.2.10.42 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 27.x et antérieures à 27.1.11.29 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 34.0.x antérieures à 34.0.2 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 26.0.x antérieures à 26.0.13.29 pour nextcloud enterprise |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.7 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 30.0.x ant\u00e9rieures \u00e0 30.0.17.12 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 23.0.x ant\u00e9rieures \u00e0 23.0.12.38 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 28.0.x ant\u00e9rieures \u00e0 28.0.14.20 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 24.0.x ant\u00e9rieures \u00e0 24.0.13.37 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 31.0.x ant\u00e9rieures \u00e0 31.0.14.8 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 25.0.x ant\u00e9rieures \u00e0 25.0.13.32 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.13 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 29.0.x ant\u00e9rieures \u00e0 29.0.16.19 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 22.x ant\u00e9rieures \u00e0 22.2.10.42 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 27.x et ant\u00e9rieures \u00e0 27.1.11.29 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.2 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 26.0.x ant\u00e9rieures \u00e0 26.0.13.29 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
"initial_release_date": "2026-09-17T00:00:00",
"last_revision_date": "2026-09-17T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1198",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-09-17T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Nextcloud Server. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans Nextcloud Server",
"vendor_advisories": [
{
"published_at": "2026-09-17",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-7hwf-8pcj-33h4",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hwf-8pcj-33h4"
}
]
}
CERTFR-2026-AVI-0973
Vulnerability from certfr_avis - Published: 2026-08-06 - Updated: 2026-08-06
De multiples vulnérabilités ont été découvertes dans les produits Nextcloud. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Nextcloud | Mail versions 4.x et 5.x antérieures à 5.5.16 | |||
| Nextcloud | Mail versions 5.7.x antérieures à 5.7.13 | |||
| Nextcloud | Mail versions 3.5.x à 3.7.x antérieures à 3.7.25 | |||
| Nextcloud | Server | Server versions 32.0.10 à 32.0.x antérieures à 32.0.12 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 33.0.4 à 33.0.x antérieures à 33.0.6 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 34.0.x antérieures à 34.0.1 pour nextcloud | ||
| Nextcloud | Mail versions 5.6.x antérieures à 5.6.20 |
References
| Title | Publication Time | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Mail versions 4.x et 5.x ant\u00e9rieures \u00e0 5.5.16",
"product": {
"name": "Mail",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Mail versions 5.7.x ant\u00e9rieures \u00e0 5.7.13",
"product": {
"name": "Mail",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Mail versions 3.5.x \u00e0 3.7.x ant\u00e9rieures \u00e0 3.7.25",
"product": {
"name": "Mail",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 32.0.10 \u00e0 32.0.x ant\u00e9rieures \u00e0 32.0.12 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 33.0.4 \u00e0 33.0.x ant\u00e9rieures \u00e0 33.0.6 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.1 pour nextcloud",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Mail versions 5.6.x ant\u00e9rieures \u00e0 5.6.20",
"product": {
"name": "Mail",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-61545",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-61545"
},
{
"name": "CVE-2026-61527",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-61527"
}
],
"initial_release_date": "2026-08-06T00:00:00",
"last_revision_date": "2026-08-06T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0973",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-08-06T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Nextcloud. Elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Nextcloud",
"vendor_advisories": [
{
"published_at": "2026-08-05",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-99gw-ww6p-f2rr",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-99gw-ww6p-f2rr"
},
{
"published_at": "2026-08-05",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-vq3v-jv6f-6xp2",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vq3v-jv6f-6xp2"
}
]
}
CVE-2026-77166 (GCVE-0-2026-77166)
Vulnerability from nvd – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:43
VLAI
EPSS
VEX
Summary
The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:42 UTC
CWE
- CWE-840 - Business Logic Errors
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Collectives |
Affected:
3.2.1 , ≤ 3.5.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-77166",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-21T18:42:53.420732Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-21T18:43:30.904Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://hackerone.com/reports/3599470"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Collectives",
"vendor": "Nextcloud",
"versions": [
{
"lessThanOrEqual": "3.5.0",
"status": "affected",
"version": "3.2.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "_dha (yoyomiski)"
}
],
"descriptions": [
{
"lang": "en",
"value": "The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items."
}
],
"metrics": [
{
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CVE-2026-77165 (GCVE-0-2026-77165)
Vulnerability from nvd – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:44
VLAI
EPSS
VEX
Summary
File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:44 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-82985 (GCVE-0-2026-82985)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
VLAI
EPSS
VEX
Summary
The Photos app's filter-based "smart albums" build their file listing using the search configuration (photosSourceFolders) of the user viewing the album, rather than the album owner's configuration. When an album owner shares a smart album with another user, that user's own folder configuration is used to determine which of the owner's files are searched — allowing them to discover files (name, file ID, and other metadata) in folders the album owner never intended to include in the shared album.
This requires the album owner to have shared a filter-based smart album with the attacker; it does not allow access to arbitrary users' files without such a share.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-82982 (GCVE-0-2026-82982)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:41 UTC
CWE
- CWE-840 - Business Logic Errors
Assigner
References
1 reference
Impacted products
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CVE-2026-82980 (GCVE-0-2026-82980)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables:
Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves).
Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:42 UTC
CWE
- CWE-287 - Improper Authentication - Generic
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Files Lock |
Affected:
31.0.0 , ≤ 33.0.0
(semver)
|
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CVE-2026-77170 (GCVE-0-2026-77170)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
VLAI
EPSS
VEX
Summary
The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:41 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-77169 (GCVE-0-2026-77169)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
A vulnerability in the team folders (formerly group folders) app when used in combination with the workspace app allowed API/REST-only delegated administrators to bypass folder-level authorization controls. The workspace app enables organizations to delegate limited administrative privileges for team folder management via API/REST only, restricting access to folders for which the admin has advanced permissions.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:42 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Team Folders |
Affected:
13.0.0 , < 22.0.0
(semver)
|
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CVE-2026-77164 (GCVE-0-2026-77164)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
VLAI
EPSS
VEX
Summary
Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST /apps/circles/event/ and POST /apps/circles/incoming/ reach this code path, allowing any unauthenticated user to force the server to issue a GET request to an internal address.
The response body of the internal request is never returned to the requester, so this is blind SSRF: an attacker can determine whether an internal service is reachable, but cannot read its response contents through this endpoint alone.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
Impacted products
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CVE-2026-68493 (GCVE-0-2026-68493)
Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
VLAI
EPSS
VEX
Summary
After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-639 - Insecure Direct Object Reference (IDOR)
Assigner
References
1 reference
Impacted products
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CVE-2026-45810 (GCVE-0-2026-45810)
Vulnerability from nvd – Published: 2026-06-01 17:13 – Updated: 2026-06-02 12:48
VLAI
EPSS
VEX
Title
Nextcloud: Propfind requests for file comments allowed to load comments for other files
Summary
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 31.0.0 to before 31.0.12, and 32.0.0 to before 32.0.3, a missing check of a relation allowed authenticated users with access to any file comment, to read the content of all comments. It is recommended that the Nextcloud Server is upgraded to 31.0.12 or 32.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 21.0.9.20, 22.2.10.35, 23.0.12.31, 24.0.12.30, 25.0.13.25, 26.0.13.22, 27.1.11.22, 28.0.14.13, 29.0.16.10, 30.0.17.5, 31.0.12 or 32.0.3
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 12:48 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/server/pull/56982 | x_refsource_MISC |
| https://hackerone.com/reports/3425534 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 31.0.0, < 31.0.12
Affected: >= 32.0.0, < 32.0.3 |
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CVE-2026-45722 (GCVE-0-2026-45722)
Vulnerability from nvd – Published: 2026-06-01 17:11 – Updated: 2026-06-01 19:33
VLAI
EPSS
VEX
Title
Nextcloud: Tables app allows limited SQLi in ORDER BY with malicious sort order argument for Table Views
Summary
Nextcloud is an open source content collaboration platform. From versions 0.9.0 to before 0.9.7, and 1.0.0 to before 1.0.2, a missing sanitization in the Tables app allowed a user with access to the tables app to perform a limited SQL injection in the ORDER BY statement of a query. Compared to normal SQL injections, the ORDER BY is limited to extracting a single bit of information per request or to make the database wait for a given time. This issue has been patched in versions 0.9.7 and 1.0.2.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 19:33 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/tables/pull/2186 | x_refsource_MISC |
| https://hackerone.com/reports/3446689 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 0.9.0, < 0.9.7
Affected: >= 1.0.0, < 1.0.2 |
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CVE-2026-45691 (GCVE-0-2026-45691)
Vulnerability from nvd – Published: 2026-06-01 17:09 – Updated: 2026-06-01 19:10
VLAI
EPSS
VEX
Title
Nextcloud: Bypass of second factor authentication on DAV endpoints
Summary
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, a pre-2FA session cookie (created after successful password authentication but before TOTP completion) could be reused as a Bearer token to authenticate against DAV endpoints, granting read/write access and bypassing mandatory two-factor authentication. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9 or 29.0.16.16
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 19:09 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/server/pull/59758 | x_refsource_MISC |
| https://hackerone.com/reports/3573399 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 32.0.0, < 32.0.9
Affected: >= 33.0.0, < 33.0.3 |
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CVE-2026-45690 (GCVE-0-2026-45690)
Vulnerability from nvd – Published: 2026-06-01 17:08 – Updated: 2026-06-02 12:49
VLAI
EPSS
VEX
Title
Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay
Summary
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication (2FA) protections. When a user initiated login with valid credentials on a 2FA-enabled account, the system created a temporary session token before enforcing the second factor challenge. This token could be extracted and replayed via HTTP Basic Authentication to gain unauthorized access to authenticated endpoints. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9 or 29.0.16.16
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 12:48 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/server/pull/59758 | x_refsource_MISC |
| https://hackerone.com/reports/3639301 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 32.0.0, < 32.0.9
Affected: >= 33.0.0, < 33.0.3 |
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CVE-2026-45545 (GCVE-0-2026-45545)
Vulnerability from nvd – Published: 2026-06-01 17:05 – Updated: 2026-06-02 15:23
VLAI
EPSS
VEX
Title
Nextcloud: SQL Injection in Column Type Parameter Allows Arbitrary SQL Execution
Summary
Nextcloud is an open source content collaboration platform. From versions 0.7.0 to before 0.7.7, 0.8.0 to before 0.8.10, 0.9.0 to before 0.9.8, and 1.0.0 to before 1.0.4, an authenticated attacker with access to the Tables app may be able to execute arbitrary up to 20 bytes long SQL queries, through a stored injection. With carefully crafted input it is possible to break out of the length limitation. The attacker could use this to extract information from the database, or modify data. This issue has been patched in versions 0.7.7, 0.8.10, 0.9.8, 1.0.4, and 2.0.0.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 15:23 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/tables/pull/2309 | x_refsource_MISC |
| https://hackerone.com/reports/3462991 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 0.7.0, < 0.7.7
Affected: >= 0.8.0, < 0.8.10 Affected: >= 0.9.0, < 0.9.8 Affected: >= 1.0.0, < 1.0.4 |
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CVE-2026-45544 (GCVE-0-2026-45544)
Vulnerability from nvd – Published: 2026-06-01 17:03 – Updated: 2026-06-01 21:40
VLAI
EPSS
VEX
Title
Nextcloud: Information Disclosure of view filter metdata via Broken Sensitive Data Masking in ViewService
Summary
Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 21:39 UTC
CWE
- CWE-1230 - Exposure of Sensitive Information Through Metadata
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/tables/pull/2312 | x_refsource_MISC |
| https://hackerone.com/reports/3483753 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 0.8.0, < 1.0.4
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CVE-2026-45543 (GCVE-0-2026-45543)
Vulnerability from nvd – Published: 2026-06-01 17:00 – Updated: 2026-06-01 19:33
VLAI
EPSS
VEX
Title
Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share
Summary
Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 19:33 UTC
CWE
- CWE-552 - Files or Directories Accessible to External Parties
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/forms/pull/3291 | x_refsource_MISC |
| https://hackerone.com/reports/3617352 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 4.3.0, < 5.2.7
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CVE-2026-45286 (GCVE-0-2026-45286)
Vulnerability from nvd – Published: 2026-06-01 16:59 – Updated: 2026-06-01 19:13
VLAI
EPSS
VEX
Title
Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
Summary
Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumerate users on the same Nextcloud instance by using the Calendar app's endpoint for suggesting attendees. The sharing restrictions, applied to other endpoints, were not effective here. This issue has been patched in versions 5.5.17 and 6.2.3.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 19:12 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/calendar/issues/7971 | x_refsource_MISC |
| https://github.com/nextcloud/calendar/pull/8197 | x_refsource_MISC |
| https://hackerone.com/reports/3540663 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 5.5.13, < 5.5.17
Affected: >= 6.2.0, < 6.2.3 |
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CVE-2026-45285 (GCVE-0-2026-45285)
Vulnerability from nvd – Published: 2026-06-01 16:57 – Updated: 2026-06-02 12:50
VLAI
EPSS
VEX
Title
Nextcloud: Hidden Public Link creation when sharing to a Team External Member
Summary
Nextcloud is an open source content collaboration platform. From versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a user shares a folder or file with a Nextcloud Team that includes an external member (a person added via email address who does not have a Nextcloud account), the system automatically creates a public link for that external member. This public link is not displayed in the share section of the folder, so the folder owner has no knowledge of its existence. It is sent via email to the external member. It grants the same permissions (read, write, delete, reshare, download) as the Team’s access. An attacker who receives or intercepts this link can access, modify, delete, reshare, and download all data in the shared folder without any further authentication. The folder owner cannot see or revoke the link through the normal sharing interface. This issue has been patched in versions 32.0.9 and 33.0.3.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 12:49 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nextcloud/security-advisories/… | x_refsource_CONFIRM |
| https://github.com/nextcloud/circles/pull/2454 | x_refsource_MISC |
| https://hackerone.com/reports/3625932 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nextcloud | security-advisories |
Affected:
>= 32.0.0, < 32.0.9
Affected: >= 33.0.0, < 33.0.3 |
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CVE-2026-77165 (GCVE-0-2026-77165)
Vulnerability from cvelistv5 – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:44
VLAI
EPSS
VEX
Summary
File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:44 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-77166 (GCVE-0-2026-77166)
Vulnerability from cvelistv5 – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:43
VLAI
EPSS
VEX
Summary
The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:42 UTC
CWE
- CWE-840 - Business Logic Errors
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Collectives |
Affected:
3.2.1 , ≤ 3.5.0
(semver)
|
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CVE-2026-68493 (GCVE-0-2026-68493)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
VLAI
EPSS
VEX
Summary
After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-639 - Insecure Direct Object Reference (IDOR)
Assigner
References
1 reference
Impacted products
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CVE-2026-82985 (GCVE-0-2026-82985)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
VLAI
EPSS
VEX
Summary
The Photos app's filter-based "smart albums" build their file listing using the search configuration (photosSourceFolders) of the user viewing the album, rather than the album owner's configuration. When an album owner shares a smart album with another user, that user's own folder configuration is used to determine which of the owner's files are searched — allowing them to discover files (name, file ID, and other metadata) in folders the album owner never intended to include in the shared album.
This requires the album owner to have shared a filter-based smart album with the attacker; it does not allow access to arbitrary users' files without such a share.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-77164 (GCVE-0-2026-77164)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
VLAI
EPSS
VEX
Summary
Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST /apps/circles/event/ and POST /apps/circles/incoming/ reach this code path, allowing any unauthenticated user to force the server to issue a GET request to an internal address.
The response body of the internal request is never returned to the requester, so this is blind SSRF: an attacker can determine whether an internal service is reachable, but cannot read its response contents through this endpoint alone.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:40 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
Impacted products
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CVE-2026-77170 (GCVE-0-2026-77170)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
VLAI
EPSS
VEX
Summary
The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:41 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
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CVE-2026-82982 (GCVE-0-2026-82982)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:41 UTC
CWE
- CWE-840 - Business Logic Errors
Assigner
References
1 reference
Impacted products
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CVE-2026-77169 (GCVE-0-2026-77169)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
A vulnerability in the team folders (formerly group folders) app when used in combination with the workspace app allowed API/REST-only delegated administrators to bypass folder-level authorization controls. The workspace app enables organizations to delegate limited administrative privileges for team folder management via API/REST only, restricting access to folders for which the admin has advanced permissions.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:42 UTC
CWE
- CWE-284 - Improper Access Control - Generic
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Team Folders |
Affected:
13.0.0 , < 22.0.0
(semver)
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CVE-2026-82980 (GCVE-0-2026-82980)
Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
VLAI
EPSS
VEX
Summary
Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables:
Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves).
Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:42 UTC
CWE
- CWE-287 - Improper Authentication - Generic
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nextcloud | Files Lock |
Affected:
31.0.0 , ≤ 33.0.0
(semver)
|
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"dataVersion": "5.2"
}