TI-2026-31946 Aliases CVE-2026-43882 GHSA-mwgh-92m2-wvhv

WWBN AVideo: Unauthenticated CRLF/ICS Injection in Scheduler downloadICS.php Allows Calendar Event Spoofing

MEDIUM 53CWE-93Published 2026-05-11 · Updated 2026-05-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

WWBN AVideo is an open source video platform. In versions up to and including 29.0, the unauthenticated plugin/Scheduler/downloadICS.php endpoint passes attacker-controlled title, description, and joinURL parameters into Scheduler::downloadICS(), which builds an ICS calendar file via the ICS helper class. ICS::escape_string() (objects/ICS.php:167-169) only escapes , and ; and does NOT neutralize CR/LF, so attacker CRLF bytes inside a property value break out and inject arbitrary ICS lines — including END:VEVENT / BEGIN:VEVENT pairs that add entire attacker-controlled calendar events. Because the malicious .ics file is served from the victim's trusted AVideo origin, this enables high-credibility calendar phishing: forged meetings with attacker-chosen SUMMARY, URL, LOCATION, and DESCRIPTION landing in the victim's calendar after import. Commit 764db592f99e545aa86bb9a4ad664ffd14c38ba5 contains an updated fix.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00214 11th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
WWBN	AVideo	up to 29.0	—	No fix listed	CNA
—	wwbn/avideo (Packagist)	up to 29.0	—	No fix listed	GHSA-mwgh-92m2-wvhv

AVideo VendorWWBN Affected up to 29.0 Fixed in — No fix listed CNA
wwbn/avideo (Packagist) Vendor— Affected up to 29.0 Fixed in — No fix listed GHSA-mwgh-92m2-wvhv

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:wwbn:avideo::::::::	—	—	WWBN

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* Versions — — ·WWBN

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-43882
2026-10-03 Alias added: GHSA-mwgh-92m2-wvhv

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-43882

Other 3

TI-2026-82233 OS command injection in AVideo-Encoder via forged streamer login CVSS 3.1CRITICAL 10.0
TI-2026-82232 Unauthenticated PHP code injection in AVideo-Encoder installer CVSS 3.1CRITICAL 10.0
TI-2026-29567 Code injection in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-26095 AVideo Allows Unauthenticated Live Stream Control via Token Verification URL Override in control.json.php CVSS 3.1CRITICAL 9.4
TI-2026-25874 Improper access control in WWBN AVideo CVSS 3.1CRITICAL 10.0
TI-2026-25758 AVideo has an Unauthenticated SQL Injection via `doNotShowCats` Parameter (Backslash Escape Bypass) CVSS 3.1CRITICAL 9.8

See all 364 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences