How severe is CVE-2026-34914?

CVE-2026-34914 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2026-34914 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34914?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34914 have an EU (EUVD) identifier?

Yes. CVE-2026-34914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38506.

When was CVE-2026-34914 published?

CVE-2026-34914 was published on 2026-06-23.

CVE-2026-34914

CVE-2026-34914 is a high-severity vulnerability with a CVSS 3.x base score of 8.3. 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-89.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38506
Weakness: CWE-89
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. A low‑privileged user could 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-2026-34914?: A missing sanitisation of user input in the zone-include.php script of Revive Adserver 6.0.6 and earlier. A low‑privileged user could 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-2026-34914?: CVE-2026-34914 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2026-34914 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-34914?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34914 have an EU (EUVD) identifier?: Yes. CVE-2026-34914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38506.
When was CVE-2026-34914 published?: CVE-2026-34914 was published on 2026-06-23.

References

https://hackerone.com/reports/3653196

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