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CVE-2023-6502

Inefficient Regular Expression Complexity in GitLab

Description

A Denial of Service (DoS) condition has been discovered in GitLab CE/EE affecting all versions before 16.10.6, version 16.11 before 16.11.3, and 17.0 before 17.0.1. It is possible for an attacker to cause a denial of service using a crafted wiki page.

Public exploit

An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit.

Show the exploits1

References tagged exploit1 reference

Timeline

  1. ID reserved

    By GitLab

  2. · 6 months later

    Published

  3. · 4 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-6502, by who scored it
Scored byCVSSScoreVector
GitLabCNA (assigner)3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVDNVD · Analyzed3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.51% · top 56% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Affected products

  • GitLab · GitLab

    • affected < 16.10.6
    • affected 16.11 – < 16.11.3
    • affected 17.0 – < 17.0.1

What to do

Solution: Upgrade to versions 16.10.6, 16.11.3, 17.0.1 or above.

References

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

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[![CVE-2023-6502](https://cveledger.app/badge/CVE-2023-6502.svg)](https://cveledger.app/cve/CVE-2023-6502)

Record last updated .