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2 vulnerabilities found for SPIP Crayons Plugin by SPIP
CVE-2026-104070 (GCVE-0-2026-104070)
Vulnerability from nvd – Published: 2026-10-06 16:16 – Updated: 2026-10-06 16:16
VLAI
EPSS
VEX
Title
SPIP Crayons Plugin < 3.5.0 Authorization Bypass RCE
Summary
The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, causing the authorization dispatcher to resolve an unconditionally-true handler instead of the proper modification check. Attackers can chain this flaw to write a malicious .html skeleton file, disclose sensitive configuration files containing the site secret, and forge a signed ajax context to execute the uploaded skeleton, achieving arbitrary PHP code execution as the web-server user.
Severity
9.8 (Critical)
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://blog.spip.net/Mises-a-jour-de-securite-cr… | vendor-advisorypatch |
| https://plugins.spip.net/crayons.html?lang=fr | product |
| https://www.vulncheck.com/advisories/spip-crayons… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SPIP | SPIP Crayons Plugin |
Affected:
0 , < 3.5.0
(semver)
|
Date Public
2026-10-06 00:00
{
"containers": {
"cna": {
"affected": [
{
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"vendor": "SPIP",
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}
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],
"credits": [
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"value": "Thomas Sanzey"
},
{
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],
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}
],
"metrics": [
{
"cvssV4_0": {
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
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"privilegesRequired": "NONE",
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},
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"description": "Missing Authorization",
"lang": "en",
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}
]
}
],
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},
"references": [
{
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],
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},
{
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"tags": [
"product"
],
"url": "https://plugins.spip.net/crayons.html?lang=fr"
},
{
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],
"url": "https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rce"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "SPIP Crayons Plugin \u003c 3.5.0 Authorization Bypass RCE",
"x_generator": {
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}
}
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"datePublished": "2026-10-06T16:16:07.042Z",
"dateReserved": "2026-10-01T18:02:50.082Z",
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"state": "PUBLISHED"
},
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CVE-2026-104070 (GCVE-0-2026-104070)
Vulnerability from cvelistv5 – Published: 2026-10-06 16:16 – Updated: 2026-10-06 16:16
VLAI
EPSS
VEX
Title
SPIP Crayons Plugin < 3.5.0 Authorization Bypass RCE
Summary
The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, causing the authorization dispatcher to resolve an unconditionally-true handler instead of the proper modification check. Attackers can chain this flaw to write a malicious .html skeleton file, disclose sensitive configuration files containing the site secret, and forge a signed ajax context to execute the uploaded skeleton, achieving arbitrary PHP code execution as the web-server user.
Severity
9.8 (Critical)
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://blog.spip.net/Mises-a-jour-de-securite-cr… | vendor-advisorypatch |
| https://plugins.spip.net/crayons.html?lang=fr | product |
| https://www.vulncheck.com/advisories/spip-crayons… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SPIP | SPIP Crayons Plugin |
Affected:
0 , < 3.5.0
(semver)
|
Date Public
2026-10-06 00:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "SPIP Crayons Plugin",
"vendor": "SPIP",
"versions": [
{
"lessThan": "3.5.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Thomas Sanzey"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulnCheck"
}
],
"datePublic": "2026-10-06T00:00:00.000Z",
"descriptions": [
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}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
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"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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},
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],
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}
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
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"patch"
],
"url": "https://blog.spip.net/Mises-a-jour-de-securite-critique-plugins-Crayons-et-Simplog.html?lang=fr"
},
{
"name": "Download Page",
"tags": [
"product"
],
"url": "https://plugins.spip.net/crayons.html?lang=fr"
},
{
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],
"url": "https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rce"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "SPIP Crayons Plugin \u003c 3.5.0 Authorization Bypass RCE",
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