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: 2020-11-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-13353 is rated Low Risk (16.7/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.27%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-13353

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.27% +0.23%
2 2026-02-12 0.08% 0.04% -0.04%
3 2025-11-21 — 0.08% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-13353

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.5 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.8 1.4 [email protected]
3.2 3.1 LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.5 1.4 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2020-13353

GitHub Security Advisory for CVE-2020-13353

GHSA-mmmm-chjf-jmvw · Severity: low · Ecosystem: rubygems — Gitaly Insufficient Session Expiration vulnerability

OS Trackers for CVE-2020-13353

vendor priority summary link
debian not yet assigned CVE-2020-13353 not yet assigned priority: Debian including 1 source packages (gitaly), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2020-13353
ubuntu low CVE-2020-13353 low priority: Ubuntu including 1 source packages (gitaly), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): DNE 5, needs-triage 1. https://ubuntu.com/security/CVE-2020-13353

Affected software / configurations for CVE-2020-13353

Vendor Product Version Raw CPE
gitlab gitaly >= 1.79.0, < 13.3.9 cpe:2.3:a:gitlab:gitaly:*:*:*:*:*:*:*:*
gitlab gitaly >= 13.4.0, < 13.4.5 cpe:2.3:a:gitlab:gitaly:*:*:*:*:*:*:*:*
gitlab gitaly >= 13.5.0, < 13.5.2 cpe:2.3:a:gitlab:gitaly:*:*:*:*:*:*:*:*

References for CVE-2020-13353

cvelogic Threat Intelligence