CVE-2026-27473 — Cross-site Scripting in Spip

CWE-79 — Cross-site Scripting5 documents5 sources
Severity
5.1MEDIUMNVD
EPSS
0.0%
top 85.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
SpipDebian Spip
Timeline
PublishedFeb 19

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.

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Affected Packages3 packages

▶NVDspip/spip4.4.0 — 4.4.9
▶debiandebian/spip< spip 4.4.9+dfsg-1 (forky)
▶Debianspip/spip< 4.4.11+dfsg-0+deb13u1+1

🔴Vulnerability Details

2
OSV
CVE-2026-27473: SPIP before 4↗2026-02-19
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GHSA
GHSA-fgj6-7f58-836m: SPIP before 4↗2026-02-19
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📋Vendor Advisories

1
Debian
CVE-2026-27473: spip - SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites ...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-27473 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-27473 — Cross-site Scripting in Spip | cvebase