CVE-2026-104070 (GCVE-0-2026-104070)

Vulnerability from cvelistv5 – Published: 2026-10-06 16:16 – Updated: 2026-10-06 16:16
VLAI
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
9.3 (Critical)
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
SPIP SPIP Crayons Plugin Affected: 0 , < 3.5.0 (semver)
guessed Create a notification for this product.
Date Public
2026-10-06 00:00
Credits
Thomas Sanzey VulnCheck
Show details on NVD website
To clipboard 

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          "url": "https://plugins.spip.net/crayons.html?lang=fr"
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "SPIP Crayons Plugin \u003c 3.5.0 Authorization Bypass RCE",
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    "dateReserved": "2026-10-01T18:02:50.082Z",
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          }
        ],
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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