CPANSA--2026-5083: Ado vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-04-08T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-04-08T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 5.3 | Severity | |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
Ado::Sessions versions through 0.935 for Perl generates insecure session ids. The session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems. Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.
Vulnerabilities
CVE-2026-5083
Vulnerability DescriptionAdo::Sessions versions through 0.935 for Perl generates insecure session ids.
The session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.
Predicable session ids could allow an attacker to gain access to systems.
Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.
| Weakness | CWE-338 : Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ado greater than 0 |
|
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA--2026-5083 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa--2026-5083.json - https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz external
https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz - https://github.com/kberov/Ado/issues/112 external
https://github.com/kberov/Ado/issues/112 - https://security.metacpan.org/docs/guides/random-data-for-security.html external
https://security.metacpan.org/docs/guides/random-data-for-security.html - http://www.openwall.com/lists/oss-security/2026/04/08/7 external
http://www.openwall.com/lists/oss-security/2026/04/08/7 - CVE-2026-5083 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-5083
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Wed Apr 8 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/