Vulnerability · Published May 15, 2026 · Assigned by GitHub_M
CVE-2026-45803gh: GitHub Actions log output in `gh run view` allows terminal escape sequence injection
Low 3.5
In plain English
A low-severity security flaw in cli from cli. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
`gh` is GitHub’s official command line tool. From 1.6.0 to before 2.92.0, a security vulnerability has been identified in GitHub CLI that could allow terminal escape sequence injection when users view GitHub Actions workflow logs using gh run view --log or gh run view --log-failed. The vulnerability stems from the way GitHub CLI handles raw Actions log output. The gh run view --log and gh run view --log-failed commands stream workflow log lines to stdout or the configured pager without sanitizing terminal control sequences. An attacker who can influence GitHub Actions log content, for example via a PR triggered workflow, can embed escape sequences that are replayed in the user's terminal when they inspect the run. Depending on the victim's terminal emulator, injected sequences could change the window title, manipulate on screen content, or in some terminal emulators (such as screen) potentially execute arbitrary commands. This vulnerability is fixed in 2.92.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gh | no fix listed | DEBIAN-CVE-2026-45803 |
| Debian:13 | gh | no fix listed | DEBIAN-CVE-2026-45803 |
| Go | github.com/cli/cli | no fix listed | GO-2026-5335 |
| Go | github.com/cli/cli | no fix listed | GHSA-crc3-h8v6-qh57 |
| Go | github.com/cli/cli/v2 | 2.92.0 | GHSA-crc3-h8v6-qh57 |
| Go | github.com/cli/cli/v2 | 2.92.0 | GO-2026-5335 |
| Ubuntu:22.04:LTS | gh | no fix listed | UBUNTU-CVE-2026-45803 |
| Ubuntu:25.10 | gh | no fix listed | UBUNTU-CVE-2026-45803 |
| Ubuntu:26.10 | gh | no fix listed | UBUNTU-CVE-2026-45803 |
Affected products (as reported)
Weakness: CWE-150 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
References
- https://github.com/cli/cli/security/advisories/GHSA-crc3-h8v6-qh57 x_refsource_CONFIRM