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GHSA-273p-m2cw-6833
GHSA-4c4x-jm2x-pf9j

Author: advisory-database[bot]

advisories/github-reviewed/2026/01/GHSA-273p-m2cw-6833/GHSA-273p-m2cw-6833.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-273p-m2cw-6833",
+  "modified": "2026-01-22T18:41:23Z",
+  "published": "2026-01-22T18:41:23Z",
+  "aliases": [
+    "CVE-2026-23831"
+  ],
+  "summary": "Rekor's COSE v0.0.1 entry type nil pointer dereference in Canonicalize via empty Message",
+  "details": "## Summary\n\nRekor’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`.\n\n## Impact\n\nA 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.\n\n## Patches\n\nUpgrade to v1.5.0\n\n## Workarounds\n\nNone",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/sigstore/rekor"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.5.0"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 1.4.3"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/security/advisories/GHSA-273p-m2cw-6833"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/commit/39bae3d192bce48ef4ef2cbd1788fb5770fee8cd"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/sigstore/rekor"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/releases/tag/v1.5.0"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-476"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-01-22T18:41:23Z",
+    "nvd_published_at": null
+  }
+}

advisories/github-reviewed/2026/01/GHSA-4c4x-jm2x-pf9j/GHSA-4c4x-jm2x-pf9j.json

@@ -0,0 +1,68 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-4c4x-jm2x-pf9j",
+  "modified": "2026-01-22T18:41:26Z",
+  "published": "2026-01-22T18:41:26Z",
+  "aliases": [
+    "CVE-2026-24117"
+  ],
+  "summary": "Rekor affected by Server-Side Request Forgery (SSRF) via provided public key URL",
+  "details": "## Summary\n\n`/api/v1/index/retrieve` supports retrieving a public key via a user-provided URL, allowing attackers to trigger SSRF to arbitrary internal services.\n\nSince 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](https://portswigger.net/web-security/ssrf/blind).\n\n## Impact\n\n* SSRF to cloud metadata (169.254.169.254)\n* SSRF to internal Kubernetes APIs\n* SSRF to any service accessible from Fulcio's network\n\n## Patches\n\nUpgrade 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.\n\n## Workarounds\n\nDisable the search endpoint with `--enable_retrieve_api=false`.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/sigstore/rekor"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.5.0"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 1.4.3"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/security/advisories/GHSA-4c4x-jm2x-pf9j"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/commit/60ef2bceba192c5bf9327d003bceea8bf1f8275f"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/sigstore/rekor"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/sigstore/rekor/releases/tag/v1.5.0"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-918"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-01-22T18:41:26Z",
+    "nvd_published_at": null
+  }
+}