Cross-Site Scripting (XSS) in mudler/localai

published 2025-03-20 19 mo ago modified 2026-06-17 4 mo ago also GHSA-w6hh-w36c-vxmw , GO-2025-3542 , EUVD-2025-6839

cvss: 5.4; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

mudler/localai version v2.21.1 contains a Cross-Site Scripting (XSS) vulnerability in its search functionality. The vulnerability arises due to improper sanitization of user input, allowing the injection and execution of arbitrary JavaScript code. This can lead to the execution of malicious scripts in the context of the victim's browser, potentially compromising user sessions, stealing session cookies, redirecting users to malicious websites, or manipulating the DOM.

Patch / fix

fixed in 2 distros 1 links 1

go github.com/mudler/LocalAI 2.22.0
mudler mudler/localai 2.22.0

govulncheck-vulndb openSUSE Tumbleweed 0.0.20250327T184518-1.1

opensuse advisories openSUSE-SU-2025:14937-1

github.com/mudler/localai@a1634b2 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-20)

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.com https://huntr.com/bounties/b39cd230-db66-471b-89b9-24afaa078e68 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/mudler/LocalAI	<2.22.0 all versions	2.22.0

Affected products

mudler mudler/localai

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-115 Misinterpretation of Input

References

github.com /mudler/localai/commit/a1634b219a4e52813e70ff07e6376a01449c4515
web, patch
huntr.com /bounties/b39cd230-db66-471b-89b9-24afaa078e68
exploit, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2024-9900
advisory
github.com /mudler/LocalAI
package
github.com /advisories/GHSA-w6hh-w36c-vxmw
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary