What is CVE-2020-13353?

CVE-2020-13353 is a low-severity vulnerability in GitLab Gitaly, classified under Insufficient Session Expiration. CVSS score: 2.5/10. Published 2020-11-17.

How severe is CVE-2020-13353?

Low severity. CVSS v3 base score is 2.5 out of 10.

Vulnerability in GitLab Gitaly

CVE-2020-13353

When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.

Published 2020-11-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

GitLab Gitaly — versions >=1.79.0, <13.3.9, >=13.4, <13.4.5, >=13.5, <13.5.2

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

gitlab.com/gitlab-org/gitaly/-/issues/2882 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13353.json (Vendor Advisory)

Frequently asked questions

What is CVE-2020-13353?: CVE-2020-13353 is a low-severity vulnerability in GitLab Gitaly, classified under Insufficient Session Expiration. CVSS score: 2.5/10. Published 2020-11-17.
How severe is CVE-2020-13353?: Low severity. CVSS v3 base score is 2.5 out of 10.