CVE-2026-35179

WWBN AVideo is an open source video platform. In versions 26.0 and prior, the SocialMediaPublisher plugin exposes a publishInstagram.json.php endpoint that acts as an unauthenticated proxy to the Facebook/Instagram Graph API. The endpoint accepts user-controlled parameters including an access token, container ID, and Instagram account ID, and passes them directly to the Graph API via InstagramUploader::publishMediaIfIsReady(). This allows any unauthenticated user to make arbitrary Graph API calls through the server, potentially using stolen tokens or abusing the platform's own credentials.

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.21% chance of exploitation in the next 30 days, 12th percentile

Published

2026-04-06

Updated

2026-04-07

Proof-of-concept exploits (1)

• advisories/GHSA-x9w5-xccw-5h9w

References

• CVE Record
• NVD entry

Related

• CVE-2026-35172
• CVE-2026-35181
• CVE-2026-35168
• CVE-2026-35187
• CVE-2026-35057
• CVE-2026-35196