CVE-2026-47373 Crypt::SaltedHash versions through 0.09 for Perl is susceptible to timing attacks
Attackers can exploit timing discrepancies in hash comparison to guess underlying hashes, compromising data confidentiality in applications using this Perl library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-47373?
CVE-2026-47373 is a high-severity vulnerability in RRWO Crypt::SaltedHash, published on 20 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Crypt::SaltedHash versions through 0.09 for Perl is susceptible to timing attacks.
These versions use Perl's built-in eq comparison. Discrepencies in timing could be used to guess the underlying hash.
Weakness: CWE-208
Which versions are affected by CVE-2026-47373?
How do I fix CVE-2026-47373?
Upgrade to a fixed version.
Is CVE-2026-47373 being exploited?
There is no known exploitation of CVE-2026-47373 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-47373, GHSA-mjc4-qqxc-7h36, UBUNTU-CVE-2026-47373.