CVE-2026-26345 json
SPIP < 4.4.8 Cross-Site Scripting in Public Area
published 2026-02-19 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-7580
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.
Patch / fix
- SPIP SPIP 4.4.8
- spip Debian 13 4.4.11+dfsg-0+deb13u1
- spip Debian 14 4.4.9+dfsg-1
debian advisories DEBIAN-CVE-2026-26345
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.6 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 8.6 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- SPIP SPIP
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
blog.spip.net
/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
vendor-advisory, patch, release-notes
-
git.spip.net
/spip/spip
product
-
vulncheck.com
/advisories/spip-cross-site-scripting-in-public-area
third-party-advisory
Sources
- CVE List CVE-2026-26345
- NVD CVE-2026-26345
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