CVE-2026-5083
Ado::Sessions versions through 0.935 for Perl generates insecure session ids
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 Note that Ado is no longer maintained, and has been removed from the CPAN index.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.
INFO
Published Date :
April 8, 2026, 6:16 a.m.
Last Modified :
April 23, 2026, 3:04 p.m.
Remotely Exploit :
Yes !
Source :
9b29abf9-4ab0-4765-b253-1875cd9b441e
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Remove the Ado::Sessions module from your system.
- Implement a secure session management solution.
- Use cryptographically secure random number generators.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5083.
| URL | Resource |
|---|---|
| https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz | Product |
| https://github.com/kberov/Ado/issues/112 | Issue Tracking |
| https://security.metacpan.org/docs/guides/random-data-for-security.html | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/08/7 | Mailing List |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5083 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5083
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5083 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-5083 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:berov:ado::sessions:*:*:*:*:*:perl:*:* versions up to (including) 0.935 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/04/08/7 Types: Mailing List Added Reference Type CPANSec: https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz Types: Product Added Reference Type CPANSec: https://github.com/kberov/Ado/issues/112 Types: Issue Tracking Added Reference Type CPANSec: https://security.metacpan.org/docs/guides/random-data-for-security.html Types: Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 08, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/04/08/7 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Apr. 08, 2026
Action Type Old Value New Value Added 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. Added CWE CWE-338 Added CWE CWE-340 Added Reference https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz Added Reference https://github.com/kberov/Ado/issues/112 Added Reference https://security.metacpan.org/docs/guides/random-data-for-security.html