175 lines
7.9 KiB
JSON
175 lines
7.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-63382",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-07-16T17:39:30.171Z",
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"datePublished": "2026-08-20T17:51:15.156Z",
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"dateUpdated": "2026-08-20T19:33:50.217Z"
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},
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"containers": {
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"cna": {
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"title": "libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-444",
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"lang": "en",
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"description": "CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "LOW",
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"subConfidentialityImpact": "LOW",
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"subIntegrityImpact": "LOW",
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"subAvailabilityImpact": "NONE",
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"baseScore": 9.2,
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/10abb34b8dc3e1184de315dd261ce4b77563cda6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/commit/10abb34b8dc3e1184de315dd261ce4b77563cda6"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/5119ceb00557bf007f9065709e852686f3c0bb6e",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/commit/5119ceb00557bf007f9065709e852686f3c0bb6e"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/83ba67373032334559b82409db035dd8c3cc1660",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/commit/83ba67373032334559b82409db035dd8c3cc1660"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/ac38703b2d312200c4f967f02936af0118d384a0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/commit/ac38703b2d312200c4f967f02936af0118d384a0"
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},
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{
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"name": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/releases/tag/release-2.1.13-stable"
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},
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{
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"name": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libevent/libevent/releases/tag/release-2.2.2-alpha"
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}
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],
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"affected": [
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{
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"vendor": "libevent",
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"product": "libevent",
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"versions": [
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{
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"version": ">= 2.2.0-alpha, < 2.2.2-alpha",
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"status": "affected"
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},
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{
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"version": "< 2.1.13",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-08-20T17:51:15.156Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttp_find_header can select only the first header, evhttp_check_transfer_encoding_ was absent so the previous whole-string comparison fails to recognize valid lists ending in chunked, and evhttp_handle_chunked_read uses EVBUFFER_EOL_CRLF rather than EVBUFFER_EOL_CRLF_STRICT, accepting bare LF chunk terminators. When libevent is deployed behind a proxy that frames the same request differently, an unauthenticated remote attacker can desynchronize request boundaries and smuggle a second request, potentially bypassing access controls or poisoning caches. This issue is fixed in versions 2.1.13 and 2.2.2-alpha."
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}
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],
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"source": {
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"advisory": "GHSA-q39v-w2g7-gr8j",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/libevent/libevent/security/advisories/GHSA-q39v-w2g7-gr8j",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-20T19:33:43.608585Z",
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"id": "CVE-2026-63382",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-20T19:33:50.217Z"
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}
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}
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]
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}
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} |