{"id":"CVE-2026-44981","summary":"CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression","details":"CrowdSec offers crowdsourced protection against malicious IPs. From 1.7.0 until 1.7.8, the LAPI router used gin-contrib/gzip with DefaultDecompressHandle globally in pkg/apiserver/controllers/controller.go, causing /v1/watchers and /v1/watchers/login to decompress unauthenticated gzip-compressed JSON request bodies without enforcing a maximum decompressed size and allowing excessive heap allocation that can make LAPI unreachable. This issue is fixed in version 1.7.8.","aliases":["GHSA-273h-gvwr-c3qj","GO-2026-5041"],"modified":"2026-07-19T03:31:06.606576155Z","published":"2026-07-16T19:47:30.747Z","database_specific":{"cwe_ids":["CWE-409"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44981.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44981.json"},{"type":"ADVISORY","url":"https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44981"},{"type":"FIX","url":"https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30"},{"type":"FIX","url":"https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/crowdsecurity/crowdsec","events":[{"introduced":"c3036e21abca984952947360e47f1f36c2ef1b22"},{"fixed":"54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30"},{"fixed":"56d0d6915f7f25941dc5b4f484028646f6601a37"}],"database_specific":{"extracted_events":[{"introduced":"1.7.0"},{"fixed":"1.7.8"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v1.7.8-rc1","v1.7.7-rc1","v1.7.7","v1.7.6","v1.7.5","v1.7.5-rc1","v1.7.4","v1.7.4-rc2","v1.7.4-rc1","v1.7.1","v1.7.1-rc4","v1.7.1-rc3","v1.7.1-rc2","v1.7.1-rc1","v1.7.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44981.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}