CVE-2026-48758

A flaw was found in the @sigstore/core component. The preAuthEncoding function incorrectly uses Node.js 'ascii' encoding when converting Pre-Authentication Encoding PAE strings to bytes. This encoding truncates Unicode characters to their low byte, allowing an attacker to substitute characters in...

PT-2026-58289

Name of the Vulnerable Software and Affected Versions sigstore-js versions prior to 0.7.1 Description The getRegistryCredentials function reads credentials from the Docker config file and selects an entry by checking if any configured auth key contains the target registry string. Due to the use o...

GHSA-9VCR-P3RJ-Q5Q6 vulnerabilities

Vulnerabilities for packages: kubescape-server-fips, falcoctl-fips, cloudbeat-fips, tkn-fips, kyverno-fips, kyverno-notation-aws-fips, spire-server-fips, trivy-operator-fips, neuvector-sigstore-interface, tflint-fips, zarf-fips, image-factory, tflint, kubescape, tkn, gitsign, ratify, trivy,...

GHSA-9VCR-P3RJ-Q5Q6 vulnerabilities

Vulnerabilities for packages: tekton-chains, tkn, trivy-operator, crossplane, kyverno-notation-aws, policy-controller, ratify, kyverno, falcoctl, gitsign, zarf, kubescape, neuvector-sigstore-interface, aactl, trivy, tflint...

CVE-2026-49834 vulnerabilities

Vulnerabilities for packages: tekton-chains, tkn, trivy-operator, crossplane, kyverno-notation-aws, policy-controller, ratify, kyverno, falcoctl, gitsign, zarf, kubescape, neuvector-sigstore-interface, aactl, trivy, tflint...

GHSA-9VCR-P3RJ-Q5Q6 sigstore-go has a multi-log threshold bypass via single compromised log

Impact What kind of vulnerability is it? Who is impacted? A verifier configured with WithTransparencyLogN1 or WithSignedCertificateTimestampsN1 expected defense-in-depth against the compromise of a single log instance. However, threshold counting counted verified witnesses per-entry or...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity due to improper validation in the threshold counting process. An attacker can bypass multi-log threshold requirements by compromising a single log and forging multiple entries or...

sigstore-go has a multi-log threshold bypass via single compromised log

Impact What kind of vulnerability is it? Who is impacted? A verifier configured with WithTransparencyLogN1 or WithSignedCertificateTimestampsN1 expected defense-in-depth against the compromise of a single log instance. However, threshold counting counted verified witnesses per-entry or...

PYSEC-2026-1924 sigstore CSRF possibility in OIDC authentication during signing

Summary The sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. Details OAuthSession creates a unique "state" and sends it as a parameter in the authentication request but the "state" in the server response seems not not be cross-checked with this value. Fix...

GO-2026-5778 Rekor has an OOM Condition due to Unbounded gzip Decompression in Alpine APK Parsing Logic in github.com/sigstore/rekor

Rekor has an OOM Condition due to Unbounded gzip Decompression in Alpine APK Parsing Logic in github.com/sigstore/rekor...

GO-2026-5851 Sigstore Timestamp Authority has OOM due to unbounded metric label cardinality in github.com/sigstore/timestamp-authority

Sigstore Timestamp Authority has OOM due to unbounded metric label cardinality in github.com/sigstore/timestamp-authority...

PYSEC-2026-1923 sigstore has insufficient validation of integration timestamp during verification

Summary Versions of sigstore-python newer than 2.0.0 but prior to 3.6.0 perform insufficient validation of the "integration time" present in "v2" and "v3" bundles during the verification flow: the "integration time" is verified if a source of signed time such as an inclusion promise is present, b...

ROOT-APP-NPM-CVE-2026-48815 CVE-2026-48815 in @rootio/sigstore - Patched by Root

Root has patched CVE-2026-48815 in the @rootio/sigstore package for Root:npm. Multiple fixed versions available...

CVE-2026-48816

creationtimestamp| type| source ---|---|--- 2026-07-01 20:35:05+00:00| published-proof-of-concept| https://github.com/sigstore/sigstore-js/security/advisories/GHSA-xgjw-pm74-86q4 2026-07-27 02:50:30+00:00| seen| https://bsky.app/profile/kriptabiz.bsky.social/post/3mrlv6kpck723 2026-07-27...

CVE-2026-48815

creationtimestamp| type| source ---|---|--- 2026-07-01 20:35:03+00:00| published-proof-of-concept| https://github.com/sigstore/sigstore-js/security/advisories/GHSA-52v5-jr5w-gjxr 2026-07-15 12:00:58+00:00| seen| https://bsky.app/profile/lambdawatchdog.bsky.social/post/3mqoodrr2wi2t 2026-07-27...

NPM: sigstore's `certificateOIDs` verification constraints are silently dropped and never enforced

NPM: sigstore's certificateOIDs verification constraints are silently dropped and never enforced vulnerability discovered by ? in WordPress Npm sigstore versions = 4.1.0...

sigstore's `certificateOIDs` verification constraints are silently dropped and never enforced

Summary The documented certificateOIDs option in sigstore.verify is accepted by the public API but discarded before verification, so required certificate extension OIDs are never checked. Details The public verify options include certificateOIDs and the documentation says those OID/value pairs...

Improper Verification of Cryptographic Signature

Overview org.webjars.npm:sigstore is a code-signing for npm packages Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the certificateOIDs option being accepted by the public API but discarded before verification, resulting in required...

Improper Verification of Cryptographic Signature

Overview @sigstore/cli is a Sigstore CLI Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the certificateOIDs option being accepted by the public API but discarded before verification, resulting in required certificate extension OIDs neve...

Improper Verification of Cryptographic Signature

Overview sigstore is a code-signing for npm packages Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the certificateOIDs option being accepted by the public API but discarded before verification, resulting in required certificate extensi...