8.4

CVE-2026-12436: Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab

Analyzed
AliasesCGA-36gh-8gcv-mwjqCGA-36p5-jj6f-fgjmCGA-3gcr-c58p-fh68
Published 29-07-2026Last modified 31-07-2026
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Vulnerability summary

CVE-2026-12436 is a high (CVSS 8.4) vulnerability in gitlab. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 40% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-WF5W-XGXG-F475

Timeline

  1. 29-07-2026
    PublishedVulnerability first disclosed.
  2. 31-07-2026
    Last modifiedVulnerability information updated.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.46% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard122 products
  • gitaly-config-18.11< 18.11.7-r0
  • gitlab-base-18.11< 18.11.7-r0
  • gitlab-base-fips-18.11< 18.11.7-r5
  • gitlab-certificates-18.11< 18.11.7-r0
  • gitlab-cfssl-self-sign-scripts-18.11< 18.11.7-r0
Wolfi18 products
  • gitlab-docker-machine-18.11< 18.11.4-r2
  • gitlab-docker-machine-19.0< 19.0.3-r0
  • gitlab-docker-machine-19.1< 19.1.2-r1
  • gitlab-runner-18.11< 18.11.4-r2
  • gitlab-runner-19.0< 19.0.3-r0
Gitlab1 product
  • gitlabEOL≥ 18.0, < 19.0.5 | ≥ 19.1, < 19.1.3 | ≥ 19.2, < 19.2.1 | ≥ 18.0.0, < 19.0.5 | ≥ 19.1.0, < 19.1.3 | 19.2.0

3 vendors · 141 products

References

5 links