CVE-2026-33650
CVE-2026-33650 is a high-severity vulnerability in Wwbn Avideo with a CVSS 3.x base score of 7.6. 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-863.
Key facts
- Severity: High (CVSS 3.x base score 7.6)
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-14488
- Weakness: CWE-863
- Affected product: Wwbn Avideo
- Published:
- Last modified:
Description
WWBN AVideo is an open source video platform. In versions up to and including 26.0, a user with the "Videos Moderator" permission can escalate privileges to perform full video management operations — including ownership transfer and deletion of any video — despite the permission being documented as only allowing video publicity changes (Active, Inactive, Unlisted). The root cause is that `Permissions::canModerateVideos()` is used as an authorization gate for full video editing in `videoAddNew.json.php`, while `videoDelete.json.php` only checks ownership, creating an asymmetric authorization boundary exploitable via a two-step ownership-transfer-then-delete chain. Commit 838e16818c793779406ecbf34ebaeba9830e33f8 contains a patch.
Frequently asked questions
- What is CVE-2026-33650?
- WWBN AVideo is an open source video platform. In versions up to and including 26.0, a user with the "Videos Moderator" permission can escalate privileges to perform full video management operations — including ownership transfer and deletion of any video — despite the permission being documented as only allowing video publicity changes (Active, Inactive, Unlisted). The root cause is that `Permissions::canModerateVideos()` is used as an authorization gate for full video editing in `videoAddNew.json.php`, while `videoDelete.json.php` only checks ownership, creating an asymmetric authorization boundary exploitable via a two-step ownership-transfer-then-delete chain. Commit 838e16818c793779406ecbf34ebaeba9830e33f8 contains a patch.
- How severe is CVE-2026-33650?
- CVE-2026-33650 has a CVSS 3.x base score of 7.6, 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 low.
- Is CVE-2026-33650 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-33650?
- CVE-2026-33650 affects Wwbn Avideo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-33650?
- 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-2026-33650 have an EU (EUVD) identifier?
- Yes. CVE-2026-33650 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14488.
- When was CVE-2026-33650 published?
- CVE-2026-33650 was published on 2026-03-23 and last updated on 2026-06-17.
References
- https://github.com/WWBN/AVideo/commit/838e16818c793779406ecbf34ebaeba9830e33f8
- https://github.com/WWBN/AVideo/security/advisories/GHSA-8x77-f38v-4m5j
Affected products (1)
- cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*
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