{"id":"CVE-2025-30160","aliases":["GHSA-g8vq-v3mg-7mrg"],"url":"https://o3.security/vulnerability/CVE-2025-30160","summary":"Redlib allows a Denial of Service via DEFLATE Decompression Bomb in restore_preferences Form","details":"A vulnerability has been identified in Redlib where an attacker can cause a denial-of-service (DOS) condition by submitting a specially crafted base2048-encoded DEFLATE decompression bomb to the restore_preferences form. This leads to excessive memory consumption and potential system instability, which can be exploited to disrupt Redlib instances. This vulnerability was introduced in 2e95e1fc6e2064ccfae87964b4860bda55eddb9a and fixed in 15147cea8e42f6569a11603d661d71122f6a02dc.\n\n### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nThis vulnerability allows a remote attacker with network access to exploit the preference restoration mechanism by providing a compressed payload that expands dramatically upon decompression. The issue arises because the system automatically decompresses user-supplied data without enforcing size limits, potentially leading to:\n\n- Out-of-memory (OOM) conditions\n- OS-level resource exhaustion, potentially leading to broader system instability or crashes\n- Repeated exploitation, keeping the target system in a persistent degraded state\n- Denial-of-service of any public instance\n\n### Patches\nThe problem has been patched in 15147cea8e42f6569a11603d661d71122f6a02dc. Users should upgrade to v0.36.0.\n\n### Workarounds\nUntil a patch is available, users can:\n\n- Implement request size limits at the web server or application level to reject excessively large inputs.\n- Disable or restrict the restore_preferences route (`/settings/encoded-restore`) at the reverse-proxy level if not required.\n- Monitor server logs for unusually large or repeated restore_preferences requests and block offending IPs.","published":"2025-03-20T18:09:48.763Z","modified":"2026-10-28T02:30:37.597977461Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"redlib","fixedVersion":"0.36.0"}],"fix":{"url":"https://github.com/redlib-org/redlib/commit/15147cea8e42f6569a11603d661d71122f6a02dc","label":"redlib-org/redlib@15147ce"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30160.json"},{"type":"ADVISORY","url":"https://github.com/redlib-org/redlib/security/advisories/GHSA-g8vq-v3mg-7mrg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30160"},{"type":"FIX","url":"https://github.com/redlib-org/redlib/commit/15147cea8e42f6569a11603d661d71122f6a02dc"},{"type":"FIX","url":"https://github.com/redlib-org/redlib/commit/2e95e1fc6e2064ccfae87964b4860bda55eddb9a"},{"type":"WEB","url":"https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p"},{"type":"PACKAGE","url":"https://github.com/redlib-org/redlib"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:37.597977461Z"}}