CVE-2026-27473

Name: CVE-2026-27473
Creator: NVD / NIST
Published: 2026-02-19T19:22:30.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2026-27473 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS 4.0

5.1/10

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/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

EPSS Probability

0.26%

17.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Spip	Spip	>= 4.4.0, < 4.4.9

References

https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlRelease Notes, Vendor Advisory
https://git.spip.net/spip/spipProduct
https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sitesThird Party Advisory

Timeline

Published: Feb 19, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-27473?

How severe is CVE-2026-27473?

CVE-2026-27473 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2026-27473?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-27473?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST