CVE-2026-89247

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-11. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier contains an XML injection vulnerability in plugin/AD_Server/VMAP.php, which is reachable without authentication when the AD_Server plugin is enabled. The script emits Content-Type: application/xml and writes the timeOffset and idTag values returned by AD_Server::getVMAPSFromRequest() directly into VMAP attributes without encoding. Those values originate from the base64- and JSON-decoded $_REQUEST['vmaps'] parameter, which is not covered by $securityFilter in objects/security.php. A remote attacker can craft a vmaps value (containing a non-empty VAST.campaing entry) and induce a user to open the resulting VMAP URL or a video page using it, injecting arbitrary and /AdSource nodes into the generated XML. The player's IMA path (afterVideoJS -> PlayerSkins::setIMAADTag) then requests the attacker-supplied ad URLs, resulting in ad injection and cross-origin requests from the victim's playback session. The issue was unfixed at the time of reporting.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Sep 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

WWBN AVideo XML Injection via plugin/AD_Server/VMAP.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wwbn-avideo-xml-injection-via-plugin-ad-server-vmap-php
github Patch Available🟡 PoC Available

XML injection: unauthenticated `plugin/AD_Server/VMAP.php` echoes attacker-controlled `vmaps` `timeOffset`/`idTag` into VMAP attributes · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-whh8-w65x-9fvx

Vendor Advisories for CVE-2026-89247(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:50 UTCEG score recompute
  2. 2026-09-18 19:50 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 19:43 UTCEG score recompute
  5. 2026-09-17 19:43 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-16 18:07 UTCEG score recompute
  8. 2026-09-16 18:07 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 17:33 UTCEG score recompute
  12. 2026-09-15 17:33 UTCGHSA enrichment
  13. 2026-09-15 16:19 UTCEG score recompute
  14. 2026-09-15 16:18 UTCGHSA enrichment
  15. 2026-09-15 15:57 UTCEG score recompute
  16. 2026-09-15 15:57 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 15:49 UTCEG score recompute
  19. 2026-09-14 15:49 UTCGHSA enrichment
  20. 2026-09-13 16:48 UTCEPSS rescore
  21. 2026-09-13 15:42 UTCGHSA enrichment
  22. 2026-09-12 15:35 UTCEG score recompute
  23. 2026-09-12 15:35 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-11 15:28 UTCEG score recompute
Show 4 more
  1. 2026-09-11 15:28 UTCGHSA enrichment
  2. 2026-09-11 12:23 UTCEG score recompute
  3. 2026-09-11 11:28 UTCEG score recompute
  4. 2026-09-11 11:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-89247?
CVE-2026-89247 is a medium vulnerability published on September 11, 2026. WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier contains an XML injection vulnerability in plugin/ADServer/VMAP.php, which is reachable without authentication when the ADServer plugin is enabled. The script emits Content-Type: application/xml and writes the timeOffset and…
When was CVE-2026-89247 disclosed?
CVE-2026-89247 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89247 actively exploited?
CVE-2026-89247 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.7% of all scored CVEs.
What is the CVSS score of CVE-2026-89247?
CVE-2026-89247 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-89247?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-89247, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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