Search
Find a vulnerability
Search criteria
2 vulnerabilities found for hollo by fedify
CVE-2026-25808 (GCVE-0-2026-25808)
Vulnerability from nvd – Published: 2026-02-09 21:50 – Updated: 2026-02-10 21:23
VLAI
Title
Hollo DMs get leaked and can be seen on Webfinger Browser
Summary
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/fedify-dev/hollo/security/advi… | x_refsource_CONFIRM |
| https://github.com/fedify-dev/hollo/commit/329969… | x_refsource_MISC |
| https://github.com/fedify-dev/hollo/releases/tag/0.6.20 | x_refsource_MISC |
| https://github.com/fedify-dev/hollo/releases/tag/0.7.2 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| fedify-dev | hollo |
Affected:
< 0.6.20, 0.7.2
Affected: >= 7.0.0, < 0.7.2 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-25808",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-10T21:23:28.921772Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-10T21:23:34.888Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "hollo",
"vendor": "fedify-dev",
"versions": [
{
"status": "affected",
"version": "\u003c 0.6.20, 0.7.2"
},
{
"status": "affected",
"version": "\u003e= 7.0.0, \u003c 0.7.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-09T21:50:10.579Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5"
},
{
"name": "https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e"
},
{
"name": "https://github.com/fedify-dev/hollo/releases/tag/0.6.20",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/releases/tag/0.6.20"
},
{
"name": "https://github.com/fedify-dev/hollo/releases/tag/0.7.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/releases/tag/0.7.2"
}
],
"source": {
"advisory": "GHSA-6r2w-3pcj-v4v5",
"discovery": "UNKNOWN"
},
"title": "Hollo DMs get leaked and can be seen on Webfinger Browser"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-25808",
"datePublished": "2026-02-09T21:50:10.579Z",
"dateReserved": "2026-02-05T19:58:01.642Z",
"dateUpdated": "2026-02-10T21:23:34.888Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-25808 (GCVE-0-2026-25808)
Vulnerability from cvelistv5 – Published: 2026-02-09 21:50 – Updated: 2026-02-10 21:23
VLAI
Title
Hollo DMs get leaked and can be seen on Webfinger Browser
Summary
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/fedify-dev/hollo/security/advi… | x_refsource_CONFIRM |
| https://github.com/fedify-dev/hollo/commit/329969… | x_refsource_MISC |
| https://github.com/fedify-dev/hollo/releases/tag/0.6.20 | x_refsource_MISC |
| https://github.com/fedify-dev/hollo/releases/tag/0.7.2 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| fedify-dev | hollo |
Affected:
< 0.6.20, 0.7.2
Affected: >= 7.0.0, < 0.7.2 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-25808",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-10T21:23:28.921772Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-10T21:23:34.888Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "hollo",
"vendor": "fedify-dev",
"versions": [
{
"status": "affected",
"version": "\u003c 0.6.20, 0.7.2"
},
{
"status": "affected",
"version": "\u003e= 7.0.0, \u003c 0.7.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-09T21:50:10.579Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5"
},
{
"name": "https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e"
},
{
"name": "https://github.com/fedify-dev/hollo/releases/tag/0.6.20",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/releases/tag/0.6.20"
},
{
"name": "https://github.com/fedify-dev/hollo/releases/tag/0.7.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/fedify-dev/hollo/releases/tag/0.7.2"
}
],
"source": {
"advisory": "GHSA-6r2w-3pcj-v4v5",
"discovery": "UNKNOWN"
},
"title": "Hollo DMs get leaked and can be seen on Webfinger Browser"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-25808",
"datePublished": "2026-02-09T21:50:10.579Z",
"dateReserved": "2026-02-05T19:58:01.642Z",
"dateUpdated": "2026-02-10T21:23:34.888Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}