Subfinder is a subdomain discovery tool that discovers valid subdomains for
websites. Designed as a passive framework to be useful for bug bounties and
safe for penetration testing.
Update Information:
Update to 2.10.1
* Wed Dec 17 2025 Mikel Olasagasti Uranga
[ 1 ] Bug #2408353 - CVE-2025-58189 subfinder: go crypto/tls ALPN negotiation error contains attacker controlled information [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2408353
[ 2 ] Bug #2409825 - CVE-2025-61723 subfinder: Quadratic complexity when parsing some invalid inputs in encoding/pem [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2409825
[ 3 ] Bug #2410775 - CVE-2025-58185 subfinder: Parsing DER payload can cause memory exhaustion in encoding/asn1 [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2410775
[ 4 ] Bug #2411671 - CVE-2025-58188 subfinder: Panic when validating certificates with DSA public keys in crypto/x509 [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2411671
[ 5 ] Bug #2412605 - CVE-2025-58183 subfinder: Unbounded allocation when parsing GNU sparse map [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2412605
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-6b23a0b058' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
Get the latest Linux and open source security news straight to your inbox.