How severe is CVE-2026-34915?

CVE-2026-34915 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-34915 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34915?

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

Does CVE-2026-34915 have an EU (EUVD) identifier?

Yes. CVE-2026-34915 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38499.

When was CVE-2026-34915 published?

CVE-2026-34915 was published on 2026-06-23.

CVE-2026-34915

CVE-2026-34915 is a medium-severity vulnerability with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38499
Weakness: CWE-79
Published: 2026-06-23
Last modified: 2026-06-23

Description

A missing sanitisation of user input in the zone-include.php script of Revive Adserver 6.0.6 and earlier could allow a low‑privileged user to exploit the clientid parameter to perform blind SQL injection attacks. Input sanitisation has been improved to ensure that all parameters processed by the script are properly validated.

Frequently asked questions

What is CVE-2026-34915?: A missing sanitisation of user input in the zone-include.php script of Revive Adserver 6.0.6 and earlier could allow a low‑privileged user to exploit the clientid parameter to perform blind SQL injection attacks. Input sanitisation has been improved to ensure that all parameters processed by the script are properly validated.
How severe is CVE-2026-34915?: CVE-2026-34915 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-34915 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-34915?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34915 have an EU (EUVD) identifier?: Yes. CVE-2026-34915 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38499.
When was CVE-2026-34915 published?: CVE-2026-34915 was published on 2026-06-23.

References

https://hackerone.com/reports/3653316

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