CVE-2026-39370

WWBN AVideo is an open source video platform. In versions 26.0 and prior, objects/aVideoEncoder.json.php still allows attacker-controlled downloadURL values with common media or archive extensions such as .mp4, .mp3, .zip, .jpg, .png, .gif, and .webm to bypass SSRF validation. The server then fetches the response and stores it as media content. This allows an authenticated uploader to turn the upload-by-URL flow into a reliable SSRF response-exfiltration primitive. The vulnerability is caused by an incomplete fix for CVE-2026-27732.

CVSS v3.1

7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS v3.1

7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS

0.21% chance of exploitation in the next 30 days, 11th percentile

Published

2026-04-07

Updated

2026-04-08

Proof-of-concept exploits (1)

• advisories/GHSA-cmcr-q4jf-p6q9

References

• CVE Record
• NVD entry

Related

• CVE-2026-39369
• CVE-2026-39373
• CVE-2026-39368
• CVE-2026-39376
• CVE-2026-39367
• CVE-2026-39387