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VulnerabilityPublished

CVE-2026-64606: fory · Deserialization of untrusted data vulnerability that may allow class-registration checks to be

Affects forySource GCVE Database

0
Authoritative record:CVE-2026-64606· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical : upgrade to 1.4.0 as a priority.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.4.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade org.apache.fory/fory to 1.4.0.

Affected software

ProductAffectedFixed in
Mavenorg.apache.fory/forypkg:maven/org.apache.fory/foryOther threatsAffected
  • <1.4.0
Fixed in
  • 1.4.0

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

AI-suggested

Users should upgrade Apache Fory to version 1.4.0 or later, where this vulnerability is fixed. No other mitigation is specified or required according to the available data.

Description

CVE-2026-64606 is a deserialization of untrusted data vulnerability in Apache Fory before version 1.4.0. It allows bypassing class-registration checks during Java lambda deserialization, affecting only the lambda capture class. The issue is fixed in Apache Fory version 1.4.0.

References

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