pruva-verify REPRO-2026-00210 curl -O https://pruva.dev/api/v1/reproductions/REPRO-2026-00210/artifacts/bundle/repro/reproduction_steps.sh && chmod +x reproduction_steps.sh && ./reproduction_steps.sh CVE-2026-48816 / GHSA-xgjw-pm74-86q4: Insufficient Verification of Data Authenticity in @sigstore/verify (npm). The verifier derives a transparency-log timestamp from tlogEntries[].integratedTime for bundle v0.2 and uses it for certificate validity checks and timestampThreshold. In inclusionProof-only entries (no signed inclusionPromise/set), integratedTime is not cryptographically bound, allowing an attacker who supplies a malicious bundle to influence time-based verification decisions.
Variant analysis
The agent's step-by-step process — every tool call, every handoff, the moment the exploit fired. Phases: support triages the advisory · repro reproduces it · vuln_variant confirms the fix blocks it · judge verifies.
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Scripts, logs, diffs, and output captured during the reproduction.