CVE-2020-13262 json
Client-Side code injection through Mermaid markup in GitLab CE/EE 12.9 and later through 13.0.1 allows a specially crafted Mermaid payload…
published 6y ago modified 2mo ago also BIT-gitlab-2020-13262 , EUVD-2020-5523
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
Client-Side code injection through Mermaid markup in GitLab CE/EE 12.9 and later through 13.0.1 allows a specially crafted Mermaid payload to PUT requests on behalf of other users via clicking on a link
Patch / fix
- bitnami gitlab 12.9.8, 12.10.7, 13.0.1
- gitlab gitlab 12.9.8, 12.10.7, 13.0.1
- gitlab gitlab_enterprise 12.9.8, 12.10.7, 13.0.1
Is CVE-2020-13262 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=12.9.0, <12.9.8 >=12.10.0, <12.10.7 >=13.0.0, <13.0.1 |
12.9.8 12.10.7 13.0.1 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
- Technology feeds
References
-
gitlab.com
/gitlab-org/cves/-/blob/master/2020/CVE-2020-13262.json
vendor-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/issues/211949
broken-link, web
-
hackerone.com
/reports/824689
permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2020-13262
web
Sources
- CVE List CVE-2020-13262
- NVD CVE-2020-13262
- OSV BIT-gitlab-2020-13262
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Enhance with deb and rpm package type records.