CVE-2026-6659 Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts
Attackers can predict password salts due to insecure random generation, potentially facilitating password cracking attacks against systems 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-2026-6659?
CVE-2026-6659 is a high-severity vulnerability in RSAVAGE Crypt::PasswdMD5, published on 8 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts.
The built-in rand function is predictable, and unsuitable for cryptography.
Weakness: CWE-338
Which versions are affected by CVE-2026-6659?
Linux distribution packages (2)
perl-Crypt-PasswdMD5 openSUSE:Leap 16.0 | All versions | 1.430.0-bp160.1.1 |
perl-Crypt-PasswdMD5 openSUSE:Tumbleweed | All versions | 1.430.0-1.1 |
How do I fix CVE-2026-6659?
Upgrade to a fixed version.
Is CVE-2026-6659 being exploited?
There is no known exploitation of CVE-2026-6659 in the wild and no public exploit code.
Sources
Also known as AZL-86411, DEBIAN-CVE-2026-6659, GHSA-j539-xxc6-73wf, UBUNTU-CVE-2026-6659, openSUSE-SU-2026:11000-1, openSUSE-SU-2026:21137-1.