Vulnerability · Published May 21, 2026 · Assigned by CPANSec
CVE-2026-5091Catalyst::Plugin::Authentication versions through 0.10024 for Perl is susceptible to timing attacks
Medium 5.1
In plain English
A medium-severity security flaw in Catalyst::Plugin::Authentication from JJNAPIORK. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.1Medium
Exploit odds (30 days)0.2%top 90.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Catalyst::Plugin::Authentication versions through 0.10024 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 or password.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libcatalyst-plugin-authentication-perl | no fix listed | DEBIAN-CVE-2026-5091 |
| Debian:13 | libcatalyst-plugin-authentication-perl | no fix listed | DEBIAN-CVE-2026-5091 |
| Debian:14 | libcatalyst-plugin-authentication-perl | 0.10026-1 | DEBIAN-CVE-2026-5091 |
| Ubuntu:22.04:LTS | libcatalyst-plugin-authentication-perl | no fix listed | UBUNTU-CVE-2026-5091 |
| Ubuntu:24.04:LTS | libcatalyst-plugin-authentication-perl | no fix listed | UBUNTU-CVE-2026-5091 |
| Ubuntu:25.10 | libcatalyst-plugin-authentication-perl | no fix listed | UBUNTU-CVE-2026-5091 |
| Ubuntu:26.04:LTS | libcatalyst-plugin-authentication-perl | no fix listed | UBUNTU-CVE-2026-5091 |
| Ubuntu:26.10 | libcatalyst-plugin-authentication-perl | no fix listed | UBUNTU-CVE-2026-5091 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| JJNAPIORK | Catalyst::Plugin::Authentication | 0 – through 0.10024 |
Weakness: CWE-208 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N