Ado::Sessions versions through 0.935 for Perl generates insecure session ids
Published Apr 8, 2026
5.3
MEDIUMCVSS 3.1
EPSS 0.52%
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Note that Ado is no longer maintained, and has been removed from the CPAN index.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.
Affected products
-
- Version 0StatusaffectedConstraints<=0.935
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Berov | Ado::Sessions | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Apr 8, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.52% (0.00521) | 42.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00428) | 33.96th | v5 (v2026.06.15) |
| Apr 8, 2026 | 0.02% (0.00017) | 3.98th | v4 (v2025.03.14) |
References (4)
- http://www.openwall.com/lists/oss-security/2026/04/08/7 Mailing List
- https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz Product
- https://github.com/kberov/Ado/issues/112 issue-trackingIssue Tracking
- https://security.metacpan.org/docs/guides/random-data-for-security.html technical-descriptionThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/04/08/7 | Mailing List | |
| https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz | Product | |
| https://github.com/kberov/Ado/issues/112 | issue-trackingIssue Tracking | |
| https://security.metacpan.org/docs/guides/random-data-for-security.html | technical-descriptionThird Party Advisory |
Change history (0)
No recorded changes yet.