Description
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, attackers can trigger SSRF to arbitrary internal services because /api/v1/index/retrieve supports retrieving a public key via user-provided URL. 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. The issue has been fixed in version 1.5.0. To workaround this issue, disable the search endpoint with --enable_retrieve_api=false.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| sigstore | rekor | < 1.5.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rekor | 1.5.0-1 | — |
| Debian 13 | rekor | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rekor | No fix yet | — |
| Ubuntu 25.10 | rekor | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | rekor | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rekor | 1.5.0-1.1 | openSUSE-SU-2026:10127-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260205T172317-150000.1.146.1 | SUSE-SU-2026:0403-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | cri-o | No fix yet | — |
| Azure Linux 3 | gh | 2.62.0-13 | — |
| Azure Linux 3 | skopeo | 1.14.4-9 | — |
| Azure Linux 2 (CBL-Mariner) | skopeo | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | aactl | 0.4.12-r42 | — |
| Wolfi rolling | buildkitd | 0.27.1-r1 | — |
| Wolfi rolling | cosign | 3.0.4-r2 | — |
| Wolfi rolling | falcoctl | 0.12.2-r0 | — |
| Wolfi rolling | flux-source-controller | 1.7.4-r7 | — |
| Wolfi rolling | gh | 2.86.0-r0 | — |
| Wolfi rolling | gitsign | 0.14.0-r0 | — |
| Wolfi rolling | goreleaser | 2.13.3-r5 | — |
| Wolfi rolling | ko | 0.18.1-r2 | — |
| Wolfi rolling | kubescape | 3.0.48-r0 | — |
| Wolfi rolling | kyverno-notation-aws | 1.1-r32 | — |
| Wolfi rolling | neuvector-sigstore-interface | 0_git20251212-r3 | — |
| Wolfi rolling | policy-controller +1 | 0.15.1-r0 | — |
| Wolfi rolling | ratify | 1.4.0-r10 | — |
| Wolfi rolling | skaffold | 2.17.1-r4 | — |
| Wolfi rolling | slsa-verifier | 2.7.1-r8 | — |
| Wolfi rolling | spire-agent | 1.14.1-r2 | — |
| Wolfi rolling | tekton-chains | 0.26.0-r5 | — |
| Wolfi rolling | teleport-18.6 +1 | 18.6.8-r9 | — |
| Wolfi rolling | tflint | 0.60.0-r7 | — |
| Wolfi rolling | tkn | 0.43.0-r4 | — |
| Wolfi rolling | trivy | 0.68.2-r2 | — |
| Wolfi rolling | trivy-operator | 0.29.0-r7 | — |
| Wolfi rolling | vexctl | 0.4.1-r8 | — |
| Wolfi rolling | witness | 0.10.2-r4 | — |
| Wolfi rolling | zarf | 0.70.1-r3 | — |
| Wolfi rolling | zot | 2.1.14-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/sigstore/rekor | < 1.5.0 | 1.5.0 | GHSA-4c4x-jm2x-pf9j |
Advisories 3
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- openSUSE-SU-2026:10127-1 rekor-1.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0403-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Mar 23, 2026