CVE-2020-13356
A specially crafted request could bypass Multipart protection and read files in certain specific paths on the server.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.8.9. A specially crafted request could bypass Multipart protection and read files in certain specific paths on the server. Affected versions are: >=8.8.9, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.
- CVSS 3.1
- 8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 1.79% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- gitlab/gitlab
- Source
- cve@gitlab.com
EPSS 1.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13356.jsonVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/230878Broken Link
- https://hackerone.com/reports/927953Permissions Required, Third Party Advisory
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13356.jsonVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/230878Broken Link
- https://hackerone.com/reports/927953Permissions Required, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.