Vulnerability in Bash-It
CVE-2026-73036
Bash-it 3.2.0 contains a terminal escape sequence injection vulnerability in the barbuk theme's Python virtualenv prompt segment that allows local attackers to inject arbitrary terminal control sequences by embedding escape sequences in the requires-python field of a pyproject.toml file. When a user navigates into a directory containing a maliciously crafted pyproject.toml, the unfiltered field value is read via awk and concatenated directly into PS1 through __prompt-command without stripping control characters, causing injected OSC or CSI sequences to be written to and interpreted by the terminal emulator on every prompt render.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Bash-It — versions 0
Weakness classification (CWE)
References
- github.com/Bash-it/bash-it (product)
- github.com/Bash-it/bash-it/commit/fab8f57818f28bfc6f2a81f86a58981c4ea72e5a (patch)
- github.com/Bash-it/bash-it/issues/2396 (issue-tracking)
- github.com/Bash-it/bash-it/pull/2397 (technical-description)
- www.vulncheck.com/advisories/bash-it-barbuk-theme-terminal-escape-sequence-inje… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73036?
- CVE-2026-73036 is a medium-severity vulnerability in Bash-It, classified under CWE-150. CVSS score: 4.4/10. Published 2026-08-11.
- How severe is CVE-2026-73036?
- Medium severity. CVSS v3 base score is 4.4 out of 10.