{"cve":"CVE-2025-67721","nvd":{"published":"2025-12-12T23:15:42.067","modified":"2026-10-07T20:10:01.970","status":"Analyzed","description":"Aircompressor is a library with ports of the Snappy, LZO, LZ4, and Zstandard compression algorithms to Java. In versions 3.3 and below, incorrect handling of malformed data in Java-based decompressor implementations for Snappy and LZ4 allow remote attackers to read previous buffer contents via crafted compressed input. With certain crafted compressed inputs, elements from the output buffer can end up in the uncompressed output, potentially leaking sensitive data. This is relevant for applications that reuse the same output buffer to uncompress multiple inputs. This can be the case of a web server that allocates a fix-sized buffer for performance purposes. There is similar vulnerability in GHSA-cmp6-m4wj-q63q. This issue is fixed in version 3.4.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-125","CWE-201"],"references":["https://github.com/airlift/aircompressor/commit/f2b489b398779b40c1ee29ddb11d7edef54ddc15","https://github.com/airlift/aircompressor/commit/ff12c4d5757c9d6d1de3d39a10402f1f84f9b765","https://github.com/airlift/aircompressor/security/advisories/GHSA-vx9q-rhv9-3jvg"],"products":["airlift:aircompressor"],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2025-67721","score":0.00526,"percentile":0.44295,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vx9q-rhv9-3jvg","url":"https://osv.dev/vulnerability/GHSA-vx9q-rhv9-3jvg","summary":"aircompressor Snappy and LZ4 Java-based decompressor implementation can leak information from reused output buffer","modified":"2026-09-10T03:50:32.261397070Z","packages":[{"ecosystem":"Maven","name":"io.airlift:aircompressor-v3","purl":"pkg:maven/io.airlift/aircompressor-v3","ranges":["<3.4"],"fixed":["3.4"]},{"ecosystem":"Maven","name":"io.airlift:aircompressor","purl":"pkg:maven/io.airlift/aircompressor","ranges":["<2.0.3"],"fixed":["2.0.3"]}]}],"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."]}