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CVE-2020-13271

17
FAUCET Score

CVE-2020-13271 is a Stored Cross-Site Scripting (XSS) vulnerability affecting all GitLab CE/EE versions through 13.0.1, specifically within the blobs API. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to execute arbitrary JavaScript code through user interaction, potentially leading to limited impact on confidentiality and integrity. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, there is some community discussion and media coverage indicating awareness of the issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.9.8CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
< 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:*:*:*
>= 13.0.0, < 13.0.1CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*: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
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 84th percentile among its peer group of 26,234 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-2020-13271.json
Vendor Advisory
gitlab.com / gitlab-org/gitlab/-/issues/200094
Broken LinkVendor Advisory
hackerone.com / reports/672150
Permissions RequiredThird Party Advisory