An issue was discovered in MISP before 2.4.156.

published 2022-03-18 4 y ago modified 2026-06-22 4 mo ago also EUVD-2022-31753

cvss: 4.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

An issue was discovered in MISP before 2.4.156. A malicious site administrator could store an XSS payload in the custom auth name. This would be executed each time the administrator modifies a user.

Patch / fix

fixed in 1 links 1

misp-project misp 2.4.156

github.com/MISP/MISP@61d4d36 commit

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/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

github.com /MISP/MISP/commit/61d4d3670593b78e4dab7a11eb620b7a372f30e6
patch, third-party-advisory

Sources

CVE List CVE-2022-27244
NVD CVE-2022-27244

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