01 Record
CVE-2026-87719
Deserialization of Untrusted Data in GitLab
CriticalPUBLISHEDCNA: GitLab
CNA base score9.9 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
02 Description
Deserialization of Untrusted Data in GitLab
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.57% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 46.9% of scored records. A rank, not a probability.
- NVD base score
- 9.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-09-28.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-12 02:46Z1 MO AGO
- Last updated
- 2026-09-23 21:05Z1 MO AGO
- Reserved
- 2026-09-09
- Assigning CNA
- GitLab
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-502Deserialization of Untrusted DataBase
- Data version
- 5.2
- Document digest
- 95402126e59fa9fb8814d747bee2c750a5ee656d5a9a7bdbc76223decef78499
05 Affected products
VendorProductVersionsPlatforms
GitLabGitLab18.3 to < 18.11.12, 19.0 to < 19.0.9, 19.1 to < 19.1.8, 19.2 to < 19.2.6, 19.3 to < 19.3.2—
06 References
- gitlab.comhttps://gitlab.com/gitlab-org/gitlab/-/work_items/628160
- hackerone.comHackerOne Bug Bounty Report #4012289https://hackerone.com/reports/4012289
07 Remediation
Upgrade to versions 18.11.12, 19.0.9, 19.1.8, 19.2.6, 19.3.2 or above.