CVE-2026-12436

Q: How do I fix CVE-2026-12436?

Upgrade gitlab to 19.0.5 or later.

Q: Is CVE-2026-12436 being actively exploited?

Not that we know of. CVE-2026-12436 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.31% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.

Q: How severe is CVE-2026-12436?

CVE-2026-12436 has a CVSS v3 base score of 8.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-12436 affect?

Published advisories record a fix for gitlab (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

8.4

CVSS v3

NVD

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.

CWE-915

How to fix

Remediation Available

gitlabNVD

Affected:>= 18.0.0, < 19.0.5Fixed in:19.0.5CVE-2026-12436derived from NVD

Affected:>= 19.1.0, < 19.1.3Fixed in:19.1.3CVE-2026-12436derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L

Exploit Intelligence

0.31%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Vendor Advisory1

docs.gitlab.com

Other references2

Related Vulnerabilities

Other CWE-915 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-4068	Medium	5.4	34%	-	Fix
CVE-2024-5452	Critical	9.8	26%	-	Fix
CVE-2026-30822	High	7.7	13%	-	Fix
CVE-2026-50160	Critical	10.0	8.6%	-	Fix
CVE-2026-33453	Critical	10.0	6.2%	-	-
CVE-2026-41277	High	8.8	3.1%	-	Fix

Common questions

How do I fix CVE-2026-12436?

Upgrade gitlab to 19.0.5 or later.

Is CVE-2026-12436 being actively exploited?

Not that we know of. CVE-2026-12436 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.31% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.

How severe is CVE-2026-12436?

CVE-2026-12436 has a CVSS v3 base score of 8.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-12436 affect?

Published advisories record a fix for gitlab (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-12436

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-03.