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VulnerabilityPublished

CVE-2026-123029: Wowza Streaming Engine · XML External Entity (XXE)

Affects Wowza Streaming EngineSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 4.12.2 soon.

Data as of 5 Nov 2026, 10:05 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (mitre)CVSS 3.17.5
Patch
Available – fixed in 4.12.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade Streaming Engine and com.wowza/streaming-engine to 4.12.2.

Affected software

ProductAffectedFixed in
WowzaStreaming EngineAffected
  • <4.12.2
Fixed in
  • 4.12.2
Mavencom.wowza/streaming-enginepkg:maven/com.wowza/streaming-engineOther threatsAffected
  • <4.12.2
Fixed in
  • 4.12.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Wowza Streaming Engine to version 4.12.2 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory.

Description

CVE-2026-123029 is a vulnerability in Wowza Streaming Engine versions before 4.12.2 that allows remote attackers to read local files via XML external entity processing. This occurs because the software improperly restricts XML external entity references, enabling unauthorized file access with the privileges of the Wowza Streaming Engine process. The issue is fixed in version 4.12.2.

References

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