CVE-2023-2199

HIGH

7.5

CVSS Score

Published: June 7, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:51 AM UTC

1 product affected across 1 vendorGitLab

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

PoC

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.0 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

GitLab · GitLabmaven

95%

v < 15.10.8v < 15.11.7v < 16.0.212.0.0 ≤ v < 15.10.815.11.0 ≤ v < 15.11.716.0.0 ≤ v < 16.0.2

Affected range stops below 15.10.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.11.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.0.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2199.json

References (3)

Vendor Advisory

Source: [email protected]

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2199.json

Broken Link

Source: [email protected]

https://gitlab.com/gitlab-org/gitlab/-/issues/408272

Permissions RequiredThird Party Advisory

Source: [email protected]

https://hackerone.com/reports/1943819

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitLab

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-1333

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