CVE-2025-2256

highpriority · track · 0EPSS 0.005 · 45 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.53% (45th) EPSS

CVSS 7.5 · high

Is it mine?

21 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.

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 · 6.9–7.5

v3.17.5highAV:N/AC:L/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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1284USCWE-1284USCWE-1284US

affected products (21)

Products and version ranges known to be affected.

Open Source GitLab <18.1.6all versionscert_bundDE
Open Source GitLab <18.2.6all versionscert_bundDE
Open Source GitLab <18.3.2all versionscert_bundDE
Open Source GitLab< 18.1.6cert_bundDE
Open Source GitLab< 18.2.6cert_bundDE
Open Source GitLab< 18.3.2cert_bundDE
GitLab GitLab18.2 → 18.2.6enisa_euvdEU
GitLab GitLab18.3 → 18.3.2enisa_euvdEU
GitLab GitLab7.12 → 18.1.6enisa_euvdEU
GitLab Inc. Gitlab18.2 → 18.2.6fstec_bduRU
GitLab Inc. Gitlab18.3 → 18.3.2fstec_bduRU
GitLab Inc. Gitlab7.12 → 18.1.6fstec_bduRU
GitLab Community Edition, Enterprise Edition≤ vers:unknown/*ncsc_nlNL
GitLab GitLab≤ vers:unknown/*ncsc_nlNL
Open Source GitLab≤ vers:unknown/*ncsc_nlNL
gitlab gitlab18.2.0 → 18.2.6nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab18.3.0 → 18.3.2nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab7.12.0 → 18.1.6nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Bitnami gitlab18.2.0 → 18.2.6osvUSpkg:bitnami/gitlab
Bitnami gitlab18.3.0 → 18.3.2osvUSpkg:bitnami/gitlab

showing 20 of 21

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0288Kwetsbaarheden verholpen in GitLab CE/EENL2025-09-12csaf · ncsc_nlNL
GitLab heeft kwetsbaarheden verholpen in GitLab CE/EE (Versies voor 18.1.6, 18.2.6, en 18.3.2).
WID-SEC-W-2025-2024GitLab: Mehrere SchwachstellenDeutsch2025-09-09csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.
BIT-gitlab-2025-2256Improper Validation of Specified Quantity in Input in GitLab2025-09-16vendor · osvUS
An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.

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 2025-09-12modified 2026-10-19

references (10)

External citations — patches, advisories, analysis.

scry

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