135 lines
6.1 KiB
JSON
135 lines
6.1 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-2026-64655",
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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": "2026-07-20T17:11:30.896Z",
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"datePublished": "2026-08-06T18:41:54.628Z",
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"dateUpdated": "2026-08-08T02:23:17.134Z"
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},
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"containers": {
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"cna": {
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"title": "GitHub CLI: Attestation Verification Bypass via Unescaped Regex Metacharacters in SAN Matching",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-185",
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"lang": "en",
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"description": "CWE-185: Incorrect Regular Expression",
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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": "ACTIVE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "LOW",
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"subAvailabilityImpact": "NONE",
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"baseScore": 2.1,
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"baseSeverity": "LOW",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/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/cli/cli/security/advisories/GHSA-mm27-mwq9-fr5g",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/cli/cli/security/advisories/GHSA-mm27-mwq9-fr5g"
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},
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{
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"name": "https://github.com/cli/cli/commit/55dbb4dc6b7edb10b48e3d7fc5bccd32318d1b55",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/cli/cli/commit/55dbb4dc6b7edb10b48e3d7fc5bccd32318d1b55"
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},
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{
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"name": "https://github.com/cli/cli/releases/tag/v2.97.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/cli/cli/releases/tag/v2.97.0"
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}
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],
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"affected": [
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{
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"vendor": "cli",
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"product": "cli",
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"versions": [
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{
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"version": "< 2.97.0",
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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": "2026-08-06T18:41:54.628Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.97.0, gh attestation verify builds the certificate Subject Alternative Name matcher from the --signer-repo and --signer-workflow flag values without escaping regex metacharacters, so a user-supplied repository or workflow name is treated as a regular expression rather than a literal string. Because GitHub permits characters such as `.` in organization, repository, and workflow path names and `.` is a regex wildcard, an attacker can register a lookalike name (for example github/artifact.attestations-workflows) that satisfies a matcher intended for a different trusted signer (github/artifact-attestations-workflows), bypassing the intended Sigstore attestation verification. Exploitation requires the attacker to create a plausible lookalike repository and produce valid attestations from it, which could undermine supply chain verification for CI/CD pipelines or policy gates that pin trust to a specific signing workflow. This issue is fixed in version 2.97.0."
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}
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],
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"source": {
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"advisory": "GHSA-mm27-mwq9-fr5g",
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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": "2026-08-08T02:23:02.313002Z",
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"id": "CVE-2026-64655",
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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": "2026-08-08T02:23:17.134Z"
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}
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}
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]
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}
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} |