How severe is CVE-2026-5031?

CVE-2026-5031 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-5031 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5031?

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

Does CVE-2026-5031 have an EU (EUVD) identifier?

Yes. CVE-2026-5031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16973.

When was CVE-2026-5031 published?

CVE-2026-5031 was published on 2026-03-29 and last updated on 2026-06-17.

CVE-2026-5031

CVE-2026-5031 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-99.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16973
Weakness: CWE-99
Published: 2026-03-29
Last modified: 2026-06-17

Description

A vulnerability was found in BichitroGan ISP Billing Software 2025.3.20. Impacted is an unknown function of the file /?_route=settings/users-view/ of the component Endpoint. The manipulation of the argument ID results in improper control of resource identifiers. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-5031?: A vulnerability was found in BichitroGan ISP Billing Software 2025.3.20. Impacted is an unknown function of the file /?_route=settings/users-view/ of the component Endpoint. The manipulation of the argument ID results in improper control of resource identifiers. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-5031?: CVE-2026-5031 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-5031 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5031?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5031 have an EU (EUVD) identifier?: Yes. CVE-2026-5031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16973.
When was CVE-2026-5031 published?: CVE-2026-5031 was published on 2026-03-29 and last updated on 2026-06-17.

References

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