How severe is CVE-2026-5083?

CVE-2026-5083 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-5083 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5083?

CVE-2026-5083 affects Berov Ado. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5083?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5083 have an EU (EUVD) identifier?

Yes. CVE-2026-5083 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20063.

When was CVE-2026-5083 published?

CVE-2026-5083 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5083

CVE-2026-5083 is a medium-severity vulnerability in Berov Ado with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-338.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20063
Weakness: CWE-338
Affected product: Berov Ado
Published: 2026-04-08
Last modified: 2026-06-17

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 Note that Ado is no longer maintained, and has been removed from the CPAN index.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.

Frequently asked questions

What is CVE-2026-5083?: 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.
How severe is CVE-2026-5083?: CVE-2026-5083 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-5083 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5083?: CVE-2026-5083 affects Berov Ado. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5083?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5083 have an EU (EUVD) identifier?: Yes. CVE-2026-5083 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20063.
When was CVE-2026-5083 published?: CVE-2026-5083 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:berov:ado\:\:sessions:*:*:*:*:*:perl:*:*

Other CWE-338 vulnerabilities

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CVE-2026-2439 — Critical (CVSS 9.8): Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id…
CVE-2025-15578 — Critical (CVSS 9.8): Maypole versions from 2.10 through 2.13 for Perl generates session ids insecurely. The session id is seeded with the…

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