CVE-2026-27474 json
SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)
published 8mo ago modified 4mo ago also EUVD-2026-8320
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
SPIP before 4.4.9 allows Cross-Site Scripting (XSS) in the private area, complementing an incomplete fix from SPIP 4.4.8. The echappe_anti_xss() function was not systematically applied to input, form, button, and anchor (a) HTML tags, allowing an attacker to inject malicious scripts through these elements. This vulnerability is not mitigated by the SPIP security screen.
Patch / fix
- SPIP SPIP 4.4.9
- spip Debian 13 4.4.11+dfsg-0+deb13u1
- spip Debian 14 4.4.9+dfsg-1
debian advisories DEBIAN-CVE-2026-27474
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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-4-4-9.html
vendor-advisory, patch, release-notes
-
git.spip.net
/spip/spip
product
-
vulncheck.com
/advisories/spip-cross-site-scripting-in-private-area-incomplete-fix
third-party-advisory
Sources
- CVE List CVE-2026-27474
- NVD CVE-2026-27474
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