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VulnerabilityPublished Updated

CVE-2026-27746: SPIP jeux · XSS or 'Cross-site Scripting'

Affects SPIP jeuxSource CVE Database V5

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Not known to be exploited · CVSS 5.1 Medium : upgrade to 4.1.1 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.1.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade jeux and spip-contrib-extensions/jeux to 4.1.1.

Affected software

ProductAffectedFixed in
SPIPjeuxAffected
  • <4.1.1
Fixed in
  • 4.1.1
GitHubspip-contrib-extensions/jeuxpkg:github/spip-contrib-extensions/jeuxOther threatsAffected
  • <4.1.1
Fixed in
  • 4.1.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Organizations should immediately upgrade the SPIP jeux plugin to version 4.1.1 or later, where the vulnerability is patched. In addition, developers should implement strict output encoding for all user-supplied input before rendering it in HTML contexts, using context-appropriate escaping functions. Input validation should be enforced to reject unexpected or malicious input early. Web application firewalls (WAFs) can be configured to detect and block common XSS attack patterns targeting the affected endpoints. Security teams should conduct regular code reviews and security testing, including automated scanning for XSS vulnerabilities. User education to recognize suspicious links can reduce the risk of successful exploitation. Monitoring web logs for unusual request patterns or error messages related to the jeux plugin can help detect attempted exploitation. Finally, applying Content Security Policy (CSP) headers can mitigate the impact of XSS by restricting script execution sources.

Description

The SPIP jeux plugin versions prior to 4.1.1 contain a reflected cross-site scripting (XSS) vulnerability in the pre_propre pipeline. The plugin incorporates untrusted request parameters into HTML output without proper output encoding, allowing attackers to inject arbitrary script content into pages that render a jeux block. When a victim is induced to visit a crafted URL, the injected content is reflected into the response and executed in the victim's browser context.

References

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