Path Traversal in Npitre Cramfs-Tools
CVE-2026-8274
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (5.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- Npitre Cramfs-Tools — versions 2.0, 2.1, 2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/362571 (technical-description, vdb-entry)
- vuldb.com/vuln/362571/cti (signature, permissions-required)
- vuldb.com/submit/810864 (third-party-advisory)
- github.com/npitre/cramfs-tools/issues/12 (issue-tracking)
- github.com/npitre/cramfs-tools/issues/12 (issue-tracking, exploit)
- github.com/npitre/cramfs-tools/commit/2fc492747115b24d8a07eddd27a2d45229cb273c (patch)
- github.com/npitre/cramfs-tools/releases/tag/v2.2 (patch)
- github.com/npitre/cramfs-tools/ (product)
Frequently asked questions
- What is CVE-2026-8274?
- CVE-2026-8274 is a medium-severity vulnerability in Npitre Cramfs-Tools, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-05-11.
- How severe is CVE-2026-8274?
- Medium severity. CVSS v3 base score is 5.3 out of 10.