HOMEVULNERABILITIESCVE-2026-34247
MEDIUM

CVE-2026-34247

CWE-862Published: March 27, 2026· Updated: Mar 31, 2026

5.4
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.8th

Official Description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `plugin/Live/uploadPoster.php` endpoint allows any authenticated user to overwrite the poster image for any scheduled live stream by supplying an arbitrary `live_schedule_id`. The endpoint only checks `User::isLogged()` but never verifies that the authenticated user owns the targeted schedule. After overwriting the poster, the endpoint broadcasts a `socketLiveOFFCallback` notification containing the victim's broadcast key and user ID to all connected WebSocket clients. Commit 5fcb3bdf59f26d65e203cfbc8a685356ba300b60 fixes the issue.

NVD Source

Technical Analysis

CVE-2026-34247 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

wwbn1 product
avideo
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/WWBN/AVideo/commit/5fcb3bdf59f26d65e203cfbc8a685356ba300b60
ADVISORYhttps://github.com/WWBN/AVideo/security/advisories/GHSA-g3hj-mf85-679g

All References (2)

→
https://github.com/WWBN/AVideo/commit/5fcb3bdf59f26d65e203cfbc8a685356ba300b60Patch
→
https://github.com/WWBN/AVideo/security/advisories/GHSA-g3hj-mf85-679gExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-34247
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-862
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedMar 27, 2026

Related CVEs (CWE-862)

CVE-2025-30416
10.0
CVE-2026-0092
10.0
CVE-2026-2031
10.0
CVE-2026-33712
10.0
CVE-2026-34976
10.0
CVE-2026-44442
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-34247 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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