CVE-2020-13334

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In GitLab versions prior to 13.2.10, 13.3.7 and 13.4.2, improper authorization checks allow a non-member of a project/group to change the confidentiality attribute of issue via mutation GraphQL query

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-863

Affected software

Vendor	Product	Versions
GitLab	GitLab	>=8.6, <13.2.10; >=13.3.0, <13.3.7; >=13.4.0, <13.4.2

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13334.jsonVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/195327Broken Link
https://hackerone.com/reports/762271Permissions Required, Third Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13334.jsonVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/195327Broken Link
https://hackerone.com/reports/762271Permissions Required, Third Party Advisory

Timeline

Published: Oct 7, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-133354.3Improper group membership validation when deleting a user account in GitLab >=7.12 allows a user to delete own account without deleting/tran CVE-2020-133364.8An issue has been discovered in GitLab affecting versions from 11.8 before 12.10.13. GitLab was vulnerable to a stored XSS by in the error t CVE-2020-133374.8An issue has been discovered in GitLab affecting versions from 12.10 to 12.10.12 that allowed for a stored XSS payload to be added as a grou CVE-2020-133385.4An issue has been discovered in GitLab affecting versions prior to 12.10.13, 13.0.8, 13.1.2. A stored cross-site scripting vulnerability was CVE-2020-133396.5An issue has been discovered in GitLab affecting all versions before 13.2.10, 13.3.7 and 13.4.2: XSS in SVG File Preview. Overall impact is CVE-2020-13347.8An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory, aka 'Windows Runtime Elevation CVE-2020-133408.7An issue has been discovered in GitLab affecting all versions prior to 13.2.10, 13.3.7 and 13.4.2: Stored XSS in CI Job Log CVE-2020-133414.9An issue has been discovered in GitLab affecting all versions prior to 13.2.10, 13.3.7 and 13.4.2. Insufficient permission check allows atta CVE-2020-133422.7An issue has been discovered in GitLab affecting versions prior to 13.2.10, 13.3.7 and 13.4.2: Lack of Rate Limiting at Re-Sending Confirmat CVE-2020-133438.8An issue has been discovered in GitLab affecting all versions starting from 11.2. Unauthorized Users Can View Custom Project Template CVE-2020-133444.4An issue has been discovered in GitLab affecting all versions prior to 13.2.10, 13.3.7 and 13.4.2. Sessions keys are stored in plain-text in CVE-2020-133455.4An issue has been discovered in GitLab affecting all versions starting from 10.8. Reflected XSS on Multiple Routes