Time-of-check time-of-use race condition in Calibre
Priority LOW 38CWE-367Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.
Why it matters now
EPSS 0.01539 75th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Calibre | unknown | — | No fix listed | CNA |
- Calibre Vendor— Affected unknown Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4126
- 2026-10-03 Alias added: GHSA-m85p-c5xr-7h82
References
More Calibre vulnerabilities
- TI-2024-06284 Calibre Arbitrary File Read CVSS 3.1HIGH 7.5
- TI-2023-24918 link_to_local_path in ebooks/conversion/plugins/html_input.py in calibre before 6.19.0… CVSS 3.1HIGH 7.5
- TI-2026-25627 calibre has a path traversal vulnerability CVSS 4.0HIGH 8.2
- TI-2026-23682 calibre has a Path Traversal Leading to Arbitrary File Write CVSS 3.1HIGH 8.2
- TI-2026-20799 Calibre Affected by Arbitrary Code Execution via Server-Side Template Injection in Calibre HTML Export CVSS 3.1HIGH 7.8
- TI-2024-06504 Calibre SQL Injection CVSS 3.1HIGH 7.1
Sources
- CVE-2011-4126 · CVE Program
- CVE-2011-4126 · NVD
- FIRST EPSS
- GHSA-m85p-c5xr-7h82 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences