177 lines
7.7 KiB
JSON
177 lines
7.7 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-2026-53586",
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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": "2026-06-09T19:11:53.484Z",
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"datePublished": "2026-08-20T18:40:08.673Z",
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"dateUpdated": "2026-08-21T21:46:05.425Z"
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},
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"containers": {
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"cna": {
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"title": "libgit2: HTTP transport can leak credentials to an offsite redirect target",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-200",
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"lang": "en",
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"description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
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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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"descriptions": [
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{
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"cweId": "CWE-522",
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"lang": "en",
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"description": "CWE-522: Insufficiently Protected Credentials",
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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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"descriptions": [
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{
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"cweId": "CWE-601",
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"lang": "en",
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"description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
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"version": "3.1"
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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/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/07de6a7e438f95ac9a6efd3222a82117e871ed27",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/07de6a7e438f95ac9a6efd3222a82117e871ed27"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/af2b29ad0a74d5bac9751376879ddaf848136d3b",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/af2b29ad0a74d5bac9751376879ddaf848136d3b"
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},
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{
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"name": "https://github.com/libgit2/libgit2/commit/c1507abc44647b3acd832a33a5b1c8c9f5ba8821",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/commit/c1507abc44647b3acd832a33a5b1c8c9f5ba8821"
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},
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{
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"name": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
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},
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{
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"name": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
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}
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],
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"affected": [
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{
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"vendor": "libgit2",
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"product": "libgit2",
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"versions": [
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{
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"version": "< 1.8.6",
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"status": "affected"
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},
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{
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"version": ">= 1.9.0, < 1.9.5",
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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": "2026-08-20T18:40:08.673Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, the built-in HTTP transport in src/libgit2/transports/http.c follows an offsite initial redirect, and handle_remote_auth and handle_auth pass transport->owner->url instead of transport->server.url to the credential callback when the redirected host returns 401 Unauthorized. A callback that scopes credentials to the original trusted URL can therefore return GIT_CREDENTIAL_USERPASS_PLAINTEXT credentials that libgit2 stores in transport->server.cred and sends as an Authorization header to the redirected host. An attacker who controls a trusted Git host or an open redirect on that host can disclose HTTP Basic credentials, personal access tokens, or equivalent credentials. This issue is fixed in versions 1.8.6 and 1.9.5."
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}
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],
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"source": {
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"advisory": "GHSA-2889-x8f6-mc4x",
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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": "2026-08-21T20:58:39.443105Z",
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"id": "CVE-2026-53586",
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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": "no"
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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": "2026-08-21T21:46:05.425Z"
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}
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}
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]
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}
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} |