{"cve":"CVE-2026-76844","nvd":{"published":"2026-08-24T14:17:02.250","modified":"2026-10-12T17:10:00.163","status":"Deferred","description":"zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call then derives a position from the stale pointer and writes past a heap allocation; any write() failure reaches it, including EPIPE on a blocking descriptor, and in versions before 1.3.1.2 the failed write must be followed by a gzclearerr() call.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","score":7.4},"cwes":["CWE-787"],"references":["https://gist.github.com/thesmartshadow/e0b9481792afb7c31e86fee1ff084490","https://github.com/madler/zlib","https://github.com/madler/zlib/blob/v1.3.2/gzwrite.c#L393","https://github.com/madler/zlib/commit/df84af25dc1942490e1d1c899a07619152a46148","https://www.vulncheck.com/advisories/zlib-1.3.1.2-through-1.3.2-heap-buffer-overflow-via-gz-vacate"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-76844","score":0.00592,"percentile":0.48002,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-g84c-rxfj-3j2c","url":"https://osv.dev/vulnerability/GHSA-g84c-rxfj-3j2c","summary":"webpack-dev-middleware vulnerable to Path Traversal via non-slash-terminated publicPath","modified":"2026-10-03T03:56:01.635170780Z","packages":[{"ecosystem":"npm","name":"webpack-dev-middleware","purl":"pkg:npm/webpack-dev-middleware","ranges":[">=8.0.0 <8.3.0"],"fixed":["8.3.0"]},{"ecosystem":"npm","name":"webpack-dev-middleware","purl":"pkg:npm/webpack-dev-middleware","ranges":["<7.4.6"],"fixed":["7.4.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}