{"id":"CVE-2026-62254","published":"2026-10-30T21:17:13.370","lastModified":"2026-10-30T23:17:12.327","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.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-400","CWE-789"],"vendors":[],"products":[],"references":[{"url":"https://github.com/LibreDWG/libredwg/commit/9de893a2e395ff5ac104a46cca54c5e2cf8f02cf","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/issues/1261","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/releases/tag/0.14","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/security/advisories/GHSA-gp83-hcvh-g255","tags":[]}],"exploitRefs":[{"url":"https://github.com/LibreDWG/libredwg/commit/9de893a2e395ff5ac104a46cca54c5e2cf8f02cf","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/issues/1261","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/releases/tag/0.14","tags":[]},{"url":"https://github.com/LibreDWG/libredwg/security/advisories/GHSA-gp83-hcvh-g255","tags":[]}],"hasPoc":true,"ai":null}