HOMEVULNERABILITIESCVE-2026-33483
HIGH

CVE-2026-33483

CWE-770Published: March 23, 2026· Updated: Mar 24, 2026

7.5
CVSS v3.1
EPSS:0.33%probability of exploitation in 30 daysPercentile:55.8th

Official Description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `aVideoEncoderChunk.json.php` endpoint is a completely standalone PHP script with no authentication, no framework includes, and no resource limits. An unauthenticated remote attacker can send arbitrary POST data which is written to persistent temp files in `/tmp/` with no size cap, no rate limiting, and no cleanup mechanism. This allows trivial disk space exhaustion leading to denial of service of the entire server. Commit 33d1bae6c731ef1682fcdc47b428313be073a5d1 contains a patch.

NVD Source

Technical Analysis

CVE-2026-33483 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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/33d1bae6c731ef1682fcdc47b428313be073a5d1
ADVISORYhttps://github.com/WWBN/AVideo/security/advisories/GHSA-vv7w-qf5c-734w

All References (2)

→
https://github.com/WWBN/AVideo/commit/33d1bae6c731ef1682fcdc47b428313be073a5d1Patch
→
https://github.com/WWBN/AVideo/security/advisories/GHSA-vv7w-qf5c-734wExploit · Mitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-33483
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-770
CISA KEVNo
EPSS (30d)0.33%
Affected1 vendor
PublishedMar 23, 2026

Related CVEs (CWE-770)

CVE-2026-12818
9.3
CVE-2026-42786
8.7
CVE-2026-35469
8.7
CVE-2026-32688
8.7
CVE-2026-43973
8.7
CVE-2026-32145
8.7

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33483 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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