CVE-2026-3988

mediumpriority · track · 0EPSS 0.005 · 42 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.49% (42nd) EPSS

CVSS 5.3 · medium

Is it mine?

19 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–7.5

v3.15.3mediumAV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cve@gitlab.comexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-407USCWE-407USCWE-789US

affected products (19)

Products and version ranges known to be affected.

Open Source GitLab <18.10.1all versionscert_bundDE
Open Source GitLab <18.8.7all versionscert_bundDE
Open Source GitLab <18.9.3all versionscert_bundDE
Open Source GitLab< 18.10.1cert_bundDE
Open Source GitLab< 18.8.7cert_bundDE
Open Source GitLab< 18.9.3cert_bundDE
GitLab GitLab18.10 → 18.10.1enisa_euvdEU
GitLab GitLab18.5 → 18.8.7enisa_euvdEU
GitLab GitLab18.9 → 18.9.3enisa_euvdEU
Сообщество свободного программного обеспечения OpenTelemetry-Go Contrib≤ 1.43.0fstec_bduRU
Сообщество свободного программного обеспечения OpenTelemetry-Go Contrib≤ 0.19.0fstec_bduRU
GitLab GitLab≤ vers:unknown/*ncsc_nlNL
Open Source GitLab≤ vers:unknown/*ncsc_nlNL
gitlab gitlab= 18.10.0nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab18.5.0 → 18.8.7nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab18.9.0 → 18.9.3nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Bitnami gitlab18.10.0 → 18.10.1osvUSpkg:bitnami/gitlab
Bitnami gitlab18.5.0 → 18.8.7osvUSpkg:bitnami/gitlab
Bitnami gitlab18.9.0 → 18.9.3osvUSpkg:bitnami/gitlab

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0103Kwetsbaarheden verholpen in GitLabNL2026-03-26csaf · ncsc_nlNL
GitLab heeft kwetsbaarheden verholpen in versies 18.8.7, 18.9.3, en 18.10.1.
WID-SEC-W-2026-0847GitLab: Mehrere SchwachstellenDeutsch2026-03-24csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um Dateien zu manipulieren, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um einen Cross-Site Scripting Angriff durchzuführen.
BIT-gitlab-2026-3988Inefficient Algorithmic Complexity in GitLab2026-03-27vendor · osvUS
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl nvd osv NVD CVE.org MITRE

published 2026-03-25modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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