Vulnerability Description
LibreDWG is a free C library to read and write DWG files. Prior to 0.14, a specially crafted R13-R2000 DWG can trigger algorithmic resource exhaustion in `decode_R13_R2000` in `src/decode.c`. The class-decoding loop performs `realloc` on every iteration without a sanity check on `num_classes`. Manipulating that field forces an extremely slow allocation loop and denial of service when the file is parsed. Running the parser in a sandbox with memory limits is a workaround rather than a remediation. This issue is fixed in version 0.14.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/LibreDWG/libredwg/commit/9de893a2e395ff5ac104a46cca54c5e2cf8f
- https://github.com/LibreDWG/libredwg/issues/1261
- https://github.com/LibreDWG/libredwg/releases/tag/0.14
- https://github.com/LibreDWG/libredwg/security/advisories/GHSA-gp83-hcvh-g255
FAQ
What is CVE-2026-62254?
CVE-2026-62254 is a vulnerability with a CVSS score of 5.5 (MEDIUM). LibreDWG is a free C library to read and write DWG files. Prior to 0.14, a specially crafted R13-R2000 DWG can trigger algorithmic resource exhaustion in `decode_R13_R2000` in `src/decode.c`. The clas...
How severe is CVE-2026-62254?
CVE-2026-62254 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-62254?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.