CVE-2020-13353
Gitaly Insufficient Session Expiration vulnerability
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.
- Record
CVE-2020-13353- CVSS 3.1
- 2.5 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
EUVDEUVD-2022-4594
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.
- Record
EUVD-2022-4594- CVSS 3.1
- 2.5 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mmmm-chjf-jmvw
Gitaly Insufficient Session Expiration vulnerability
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above. Affected versions are: >=1.79.0, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.
- Record
GHSA-mmmm-chjf-jmvw- CVSS 3.1
- 3.2 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-613
- Updated
- 2026-11-02
NVD
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.
- Record
CVE-2020-13353- CVSS 3.1
- 2.5 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N - CVSS 3.1
- 3.2 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-613
- Updated
- 2026-11-02
OSV
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above.
- Record
CVE-2020-13353- CVSS 3.1
- 3.2 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-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.
- Record
DEBIAN-CVE-2020-13353- CVSS 3.1
- 3.2 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-mmmm-chjf-jmvw
Gitaly Insufficient Session Expiration vulnerability
When importing repos via URL, one time use git credentials were persisted beyond the expected time window in Gitaly 1.79.0 or above. Affected versions are: >=1.79.0, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.
- Record
GHSA-mmmm-chjf-jmvw- CVSS 3.1
- 3.2 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N - Weakness
- CWE-613
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gitalyRubyGems |
1.79.0 up to 13.3.9 | 13.3.9 |
gitalyRubyGems |
13.4 up to 13.4.5 | 13.4.5 |
gitalyRubyGems |
13.5 up to 13.5.2 | 13.5.2 |
gitalyDebian:13 |
before 13.3.9-1 | 13.3.9-1 |
gitalyRubyGems |
1.79.0 up to 13.3.9, plus listed versions 1.80.01.81.01.82.01.83.01.84.0 Show 16 moreShow less1.85.01.86.01.87.012.10.012.9.0.pre.rc413.0.0.pre.rc113.1.0.pre.rc113.1.0.pre.rc313.1.0.pre.rc413.2.0.pre.rc113.2.0.pre.rc213.3.0.pre.rc113.3.0.pre.rc213.3.0.pre.rc313.3.0.pre.rc413.3.0.pre.rc5 |
13.3.9 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13353 is a low vulnerability (CVSS 2.5) in Gitlab Gitaly, published November 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in gitaly 13.3.9.
References
gitlab.com/gitlab-org/gitaly/-/issues/2882
nvd.nist.gov/vuln/detail/CVE-2020-13353
github.com/rubysec/ruby-advisory-db/blob/master/gems/gitaly/CVE-2020-13353.yml
security-tracker.debian.org/tracker/CVE-2020-13353