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This PR contains the following updates:

Package Change Age Confidence
github.com/sigstore/rekor v1.4.3 -> v1.5.0 age confidence

GitHub Vulnerability Alerts

CVE-2026-23831

Summary

Rekor’s cose v0.0.1 entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message. validate() returns nil (success) when message is empty, leaving sign1Msg uninitialized, and Canonicalize() later dereferences v.sign1Msg.Payload.

Impact

A malformed proposed entry of the cose/v0.0.1 type can cause a panic on a thread within the Rekor process. The thread is recovered so the client receives a 500 error message and service still continues, so the availability impact of this is minimal.

Patches

Upgrade to v1.5.0

Workarounds

None

CVE-2026-24117

Summary

/api/v1/index/retrieve supports retrieving a public key via a user-provided URL, allowing attackers to trigger SSRF to arbitrary internal services.

Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF.

Impact

  • SSRF to cloud metadata (169.254.169.254)
  • SSRF to internal Kubernetes APIs
  • SSRF to any service accessible from Fulcio's network

Patches

Upgrade to v1.5.0. Note that this is a breaking change to the search API and fully disables lookups by URL. If you require this feature, please reach out and we can discuss alternatives.

Workarounds

Disable the search endpoint with --enable_retrieve_api=false.


Release Notes

sigstore/rekor (github.com/sigstore/rekor)

v1.5.0

Compare Source

This release fixes GHSA-273p-m2cw-6833 and GHSA-4c4x-jm2x-pf9j. Note that this
drops support for fetching public keys via URL when querying the search API.

Vulnerability Fixes

  • Handle malformed COSE and DSSE entries (#​2729)
  • Drop support for fetching public keys by URL in the search index (#​2731)

Features

  • Add support for a custom TLS config for clients (#​2709)

Configuration

📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.


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This PR has been generated by Renovate Bot.

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