CVE Explorer

CVE-2026-49834

sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1) counts verified witnesses per entry or per validation path rather than per log authority, allowing a single compromised transparency log or CT log to satisfy multi-log threshold requirements and defeat the multi-log policy. This issue is fixed in version 1.2.0.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:418ee65f678ca7f4bd80ecab78d957fcf3e11bbb3cdeeab635deb5ae07e7c03a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"sigstore-go","vendor":"sigstore","versions":[{"status":"affected","version":"< 1.2.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-347","description":"CWE-347: Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions

{"name":"https://github.com/sigstore/sigstore-go/commit/dbb07e62623edd5b175fb9dd5a41dcb85a159207","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/commit/dbb07e62623edd5b175fb9dd5a41dcb85a159207"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/references/2

{"name":"https://github.com/sigstore/sigstore-go/pull/633","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/pull/633"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/references/1

{"name":"https://github.com/sigstore/sigstore-go/releases/tag/v1.2.0","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/releases/tag/v1.2.0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/references/3

{"name":"https://github.com/sigstore/sigstore-go/security/advisories/GHSA-9vcr-p3rj-q5q6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sigstore/sigstore-go/security/advisories/GHSA-9vcr-p3rj-q5q6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:94af4c3137f357b49f792f5463bd4d05646df16c720e5ff127f8d112a12fee15 · sha256:21ed60313b003ae8… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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