{"id":"CVE-2026-44981","state":"PUBLISHED","title":"CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression","description":"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.","publishedAt":"2026-07-16T19:47:30.747Z","updatedAt":"2026-07-17T13:50:30.497Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["crowdsecurity crowdsec"],"affected":[{"vendor":"crowdsecurity","product":"crowdsec","versions":[{"version":">= 1.7.0, < 1.7.8","status":"affected"}]}],"references":["https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj","https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30","https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37"],"weaknesses":["CWE-409"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44981.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44981","state":"PUBLISHED","datePublished":"2026-07-16T19:47:30.747Z","dateUpdated":"2026-07-17T13:50:30.497Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-08T16:23:33.264Z"},"containers":{"cna":{"title":"CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"crowdsecurity","product":"crowdsec","versions":[{"version":">= 1.7.0, < 1.7.8","status":"affected"}]}],"references":[{"url":"https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj","name":"https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30","name":"https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30","tags":["x_refsource_MISC"]},{"url":"https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37","name":"https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-409","lang":"en","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-16T19:47:30.747Z"},"source":{"advisory":"GHSA-273h-gvwr-c3qj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T13:50:13.445431Z","id":"CVE-2026-44981","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-17T13:50:30.497Z"}}]}}}