153 lines
6.7 KiB
JSON
153 lines
6.7 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-2026-63379",
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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": "2026-07-16T17:39:30.170Z",
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"datePublished": "2026-08-20T17:55:00.789Z",
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"dateUpdated": "2026-08-25T15:14:26.228Z"
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},
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"containers": {
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"cna": {
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"title": "Libevent: HTTP Header 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": "LOW",
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"vulnIntegrityImpact": "LOW",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 6.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/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-2gmv-p5m7-98p6",
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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-2gmv-p5m7-98p6"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/87e8e44fa774e9677b089b1a5114ee68aefa1636",
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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/87e8e44fa774e9677b089b1a5114ee68aefa1636"
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},
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{
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"name": "https://github.com/libevent/libevent/commit/b847071141b3827900d536594ec9045eb0a4c485",
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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/b847071141b3827900d536594ec9045eb0a4c485"
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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": "< 2.1.13",
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"status": "affected"
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},
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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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}
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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": "2026-08-20T17:55:00.789Z"
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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, libevent processes chunked HTTP trailers in http.c through evhttp_read_trailer and merges them into request headers. The fix introduces evhttp_parse_headers_impl_ and a temporary trailer header list. An unauthenticated remote attacker can place security-sensitive fields in trailers so that an upstream proxy and the libevent application interpret different effective headers, enabling header smuggling, authorization bypass, proxy-header spoofing, or cache poisoning. The fix parses trailers into a temporary header list and discards them instead of merging them into req->input_headers. 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-2gmv-p5m7-98p6",
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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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"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": "2026-08-25T15:14:11.010475Z",
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"id": "CVE-2026-63379",
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"options": [
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{
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"Exploitation": "none"
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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": "partial"
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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": "2026-08-25T15:14:26.228Z"
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}
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}
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]
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}
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} |