CVE-2026-120386: Effekseer improperly validates "effect" files
Source GCVE Database
Not known to be exploited · CVSS 4.3 Medium.
Data as of 9 Nov 2026, 10:22 UTC
Thin evidence
One scorer or none| CNA (jpcert) | CVSS 3.0 | 4.3 |
|---|---|---|
| CNA (jpcert) | CVSS 4.0 | 5.1 |
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 9 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| EffekseerEffekseer | Affected
| Fixed in– |
GitHubeffekseer/Effekseerpkg:github/effekseer/EffekseerOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should avoid loading untrusted or suspicious effect files until a fix is available. Monitor vendor advisories for updates regarding patches or mitigations.
Description
Effekseer contains a vulnerability where it improperly validates "effect" files. Loading a specially crafted effect file can cause the host process to crash, resulting in a denial of service condition.