How severe is CVE-2026-34740?

CVE-2026-34740 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34740 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34740?

CVE-2026-34740 affects Wwbn Avideo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34740?

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

Does CVE-2026-34740 have an EU (EUVD) identifier?

Yes. CVE-2026-34740 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17660.

When was CVE-2026-34740 published?

CVE-2026-34740 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34740

CVE-2026-34740 is a medium-severity vulnerability in Wwbn Avideo with a CVSS 3.x base score of 6.5. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17660
Weakness: CWE-918
Affected product: Wwbn Avideo
Published: 2026-03-31
Last modified: 2026-06-17

Description

WWBN AVideo is an open source video platform. In versions 26.0 and prior, the EPG (Electronic Program Guide) link feature in AVideo allows authenticated users with upload permissions to store arbitrary URLs that the server fetches on every EPG page visit. The URL is validated only with PHP's FILTER_VALIDATE_URL, which accepts internal network addresses. Although AVideo has a dedicated isSSRFSafeURL() function for preventing SSRF, it is not called in this code path. This results in a stored server-side request forgery vulnerability that can be used to scan internal networks, access cloud metadata services, and interact with internal services. At time of publication, there are no publicly available patches.

Frequently asked questions

What is CVE-2026-34740?: WWBN AVideo is an open source video platform. In versions 26.0 and prior, the EPG (Electronic Program Guide) link feature in AVideo allows authenticated users with upload permissions to store arbitrary URLs that the server fetches on every EPG page visit. The URL is validated only with PHP's FILTER_VALIDATE_URL, which accepts internal network addresses. Although AVideo has a dedicated isSSRFSafeURL() function for preventing SSRF, it is not called in this code path. This results in a stored server-side request forgery vulnerability that can be used to scan internal networks, access cloud metadata services, and interact with internal services. At time of publication, there are no publicly available patches.
How severe is CVE-2026-34740?: CVE-2026-34740 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34740 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34740?: CVE-2026-34740 affects Wwbn Avideo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34740?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34740 have an EU (EUVD) identifier?: Yes. CVE-2026-34740 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17660.
When was CVE-2026-34740 published?: CVE-2026-34740 was published on 2026-03-31 and last updated on 2026-06-17.

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-x5vx-vrpf-r45f

Affected products (1)

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*

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