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CVE-2020-13262

17
FAUCET Score

CVE-2020-13262 describes a client-side code injection vulnerability in GitLab CE/EE versions 12.9 through 13.0.1, where specially crafted Mermaid markup can allow an attacker to make PUT requests on behalf of other users who click a malicious link. This medium severity vulnerability (CVSS 6.1) requires user interaction and has a low impact on confidentiality and integrity, with no impact on availability. There is no evidence of active exploitation, public exploit code, or Metasploit modules, and community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.9.0, < 12.9.8CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
>= 12.9.0, < 12.9.8CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
>= 12.10.0, < 12.10.7CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
>= 12.10.0, < 12.10.7CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
13.0.0CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:13.0.0:*:*:*:community:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 66th percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitlab.com / gitlab-org/cves/-/blob/master/2020/CVE-2020-13262.json
Vendor Advisory
gitlab.com / gitlab-org/gitlab/-/issues/211949
Broken Link
hackerone.com / reports/824689
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