diff --git a/gems/sinatra/CVE-2025-61921.yml b/gems/sinatra/CVE-2025-61921.yml
index d203182518..2b2549c2d6 100644
--- a/gems/sinatra/CVE-2025-61921.yml
+++ b/gems/sinatra/CVE-2025-61921.yml
@@ -2,7 +2,7 @@
 gem: sinatra
 cve: 2025-61921
 ghsa: mr3q-g2mv-mr4q
-url: https://github.com/sinatra/sinatra/security/advisories/GHSA-mr3q-g2mv-mr4q
+url: https://nvd.nist.gov/vuln/detail/CVE-2025-61921
 title: Sinatra is vulnerable to ReDoS through ETag header value generation
 date: 2025-10-10
 description: |
@@ -32,6 +32,7 @@ patched_versions:
   - ">= 4.2.0"
 related:
   url:
+    - https://nvd.nist.gov/vuln/detail/cve-2025-61921
     - https://github.com/sinatra/sinatra/security/advisories/GHSA-mr3q-g2mv-mr4q
     - https://github.com/sinatra/sinatra/issues/2120
     - https://github.com/sinatra/sinatra/pull/1823
diff --git a/rubies/rbx/CVE-2012-5372.yml b/rubies/rbx/CVE-2012-5372.yml
index 966e3df205..af99a7f4b9 100644
--- a/rubies/rbx/CVE-2012-5372.yml
+++ b/rubies/rbx/CVE-2012-5372.yml
@@ -22,7 +22,7 @@ related:
   url:
     - https://nvd.nist.gov/vuln/detail/CVE-2012-5372
     - https://github.com/rubinius/rubinius/commit/a9a40fc6a1256bcf6382631b710430105c5dd868
-    - https://github.com/advisories/GHSA-GHSA-9f35-5wj4-v27g
+    - https://github.com/advisories/GHSA-9f35-5wj4-v27g
     - http://2012.appsec-forum.ch/conferences/#c17
     - http://www.ocert.org/advisories/ocert-2012-001.html
     - https://web.archive.org/web/20200229110821/http://www.securityfocus.com/bid/56670