Vulnerability · Published Feb 19, 2026 · Assigned by VulnCheck
CVE-2026-27473SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites
Medium 6.4
In plain English
A medium-severity security flaw in SPIP from SPIP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.3%top 77.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | spip | 4.4.11+dfsg-0+deb13u1 | DEBIAN-CVE-2026-27473 |
| Debian:13 | spip | 4.4.11+dfsg-0+deb13u1 | DSA-6155-1 |
| Debian:14 | spip | 4.4.9+dfsg-1 | DEBIAN-CVE-2026-27473 |
| Ubuntu:22.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-27473 |
| Ubuntu:24.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-27473 |
| Ubuntu:25.10 | spip | no fix listed | UBUNTU-CVE-2026-27473 |
| Ubuntu:26.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-27473 |
Affected products (as reported)
References
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html vendor-advisory, patch
- https://git.spip.net/spip/spip product
- VulnCheck Advisory: SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites third-party-advisory