[GHSA-r2q3-hjc8-7x6q] Crypt::DSA versions before 1.20 for Perl generate seeds...

advisories/unreviewed/2026/05/GHSA-r2q3-hjc8-7x6q/GHSA-r2q3-hjc8-7x6q.json

@@ -1,14 +1,43 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-r2q3-hjc8-7x6q",
-  "modified": "2026-05-16T03:31:27Z",
+  "modified": "2026-05-16T03:32:33Z",
   "published": "2026-05-16T00:31:11Z",
   "aliases": [
     "CVE-2026-8700"
   ],
-  "details": "Crypt::DSA versions before 1.20 for Perl generate seeds using rand.\n\nSeeds were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage.",
-  "severity": [],
-  "affected": [],
+  "summary": "Crypt::DSA Uses Predictable Random Number Generator for Seed Generation",
+  "details": "### Summary\nVersions of the `Crypt::DSA` module for Perl prior to 1.20 generate cryptographic seeds using Perl's built-in `rand()` function. The `rand()` function is a pseudo-random number generator (PRNG) that is deterministic, predictable, and not designed or intended for use in cryptographic contexts.\n\n### Impact\nAn attacker can exploit the predictability of the `rand()` seed generation logic to reproduce or guess the keys generated by the `Crypt::DSA::KeyChain` engine. This significantly decreases the entropy of the resulting Digital Signature Algorithm (DSA) private keys, allowing a remote or local adversary to potentially recover private signing keys, forge signatures, or decrypt intercepted traffic that relies on these keys.\n\n### Remediation\nUpgrade the `Crypt::DSA` Perl module to version **1.20** or later. Version 1.20 replaces the usage of `rand()` with a cryptographically secure random number generator (CSPRNG) interface during internal seed setup.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Packagist",
+        "name": "Crypt::DSA"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "= 1.20"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "< 1.20"
+      }
+    }
+  ],
   "references": [
     {
       "type": "ADVISORY",
@@ -31,7 +60,7 @@
     "cwe_ids": [
       "CWE-331"
     ],
-    "severity": null,
+    "severity": "CRITICAL",
     "github_reviewed": false,
     "github_reviewed_at": null,
     "nvd_published_at": "2026-05-15T22:16:57Z"