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Fencer Vulns
high 8.7

CVE-2026-92883 json

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

published 2026-10-13 27 d ago modified 2026-10-16 23 d ago also BIT-gitlab-2026-92883 , EUVD-2026-98215

cvss
8.7
version 3.1, CNA
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

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to execute arbitrary JavaScript in the context of other users' browser sessions via a specially crafted repository, due to improper sanitization of HTML attributes in syntax-highlighted output.

Patch / fix

  • bitnami gitlab 19.2.8, 19.3.5, 19.4.2
  • GitLab GitLab 19.2.8, 19.3.5, 19.4.2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
25 d ago

Exploit prediction

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

Exploits and checks

  • hackerone.com https://hackerone.com/reports/3936831 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
OSV 3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=19.1.0, <19.2.8
>=19.3.0, <19.3.5
>=19.4.0, <19.4.2
19.2.8
19.3.5
19.4.2

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

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.