CVE-2026-100755 | BDVDB-2026-388158 Detail

GitLabGitLab

Description#

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain deployment configurations, could have allowed an authenticated user to poison cached page content served to other users due to improper cache key construction.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

References#

Exploit#

No public exploit known

History#

Version 12026-10-13Record published in the CVE List.
Version 22026-10-14Most recent update recorded in the CVE List.

Published

Published: 2026-10-13
Last modified: 2026-10-14

Vendor information

Vendor: GitLab
Product: GitLab

All GitLab vulnerabilities

Score

4.6 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 0.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 16.2 and < 19.2.8
Fixed
19.2.8
Vulnerable
>= 19.3 and < 19.3.5
Fixed
19.3.5
Vulnerable
>= 19.4 and < 19.4.2
Fixed
19.4.2

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.6 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	Low
User Interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity	Low
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).