9.9

CVE-2026-89078: Double Free in GitLab

Analyzed
AliasesCGA-2mv9-rjg9-mr5fCGA-7fpj-xx86-8m59CGA-gch9-4rw2-8wq6
Published 23-09-2026Last modified 25-09-2026

Vulnerability summary

CVE-2026-89078 is a critical (CVSS 9.9) Double Free vulnerability in gitlab. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 42.1% 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
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12252-1

Timeline

  1. 23-09-2026
    PublishedVulnerability first disclosed.
  2. 25-09-2026
    Last modifiedVulnerability information updated.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

Increase +0.14 pp

From 0.36% on 29-09-2026

29-09-202629-10-2026

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.

Chainguard12 products
  • gitlab-docker-machine-19.2< 19.2.6-r1
  • gitlab-docker-machine-fips-19.2< 19.2.6-r1
  • gitlab-runner-19.2< 19.2.6-r1
  • gitlab-runner-fips-19.2< 19.2.6-r1
  • gitlab-runner-helper-19.2< 19.2.6-r1
Wolfi6 products
  • gitlab-docker-machine-19.2< 19.2.6-r1
  • gitlab-runner-19.2< 19.2.6-r1
  • gitlab-runner-helper-19.2< 19.2.6-r1
  • gitlab-runner-helper-compat-19.2< 19.2.6-r1
  • gitlab-runner-helper-oci-entrypoint-19.2< 19.2.6-r1
Debian2 products
  • ruby3.1All versions (No fix recorded)
  • ruby3.3All versions (No fix recorded)
Alpine1 product
  • ruby< 3.3.13-r0 | < 3.4.12-r0
Gitlab1 product
  • gitlab≥ 19.2, < 19.2.7 | ≥ 19.3, < 19.3.3 | ≥ 19.4, < 19.4.1 | ≥ 19.2.0, < 19.2.7 | ≥ 19.3.0, < 19.3.3 | 19.4.0

5 vendors · 22 products

References

5 links