SPIP 4.0.0 is affected by a Cross Site Scripting (XSS) vulnerability in ecrire/public/interfaces.php, adding the function safehtml to the v…

published 2022-01-26 4y ago modified 2026-06-17 4mo ago also EUVD-2021-30976

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

SPIP 4.0.0 is affected by a Cross Site Scripting (XSS) vulnerability in ecrire/public/interfaces.php, adding the function safehtml to the vulnerable fields. An editor is able to modify his personal information. If the editor has an article written and available, when a user goes to the public site and wants to read the author's information, the malicious code will be executed. The "Who are you" and "Website Name" fields are vulnerable.

Patch / fix

distros 2 links 1

debian ubuntu

spip Debian 14, Debian 13 3.2.12-1

debian advisories DEBIAN-CVE-2021-44120

spip Ubuntu 18.04 LTS 3.1.4-4~deb9u5build0.18.04.1
spip Ubuntu 20.04 LTS 3.2.7-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2021-44120

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

git.spip.net/spip/spip@d548391 commit

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Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

git.spip.net /spip/spip/commit/d548391d799387d1e93cf1a369d385c72f7d5c81
patch, vendor-advisory

Sources

CVE List CVE-2021-44120
NVD CVE-2021-44120

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