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VulnerabilityPublished

CVE-2026-66391: Apache Wicket · Weak Randomness

Affects Apache WicketSource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium · fixed in 10.10.0 : update Apache Wicket when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 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

Affected software

ProductAffectedFixed in
Apache Software FoundationApache WicketAffected
  • >=9.0.0 <=9.23.0
  • >=10.0.0 <=10.9.0
Fixed in–
MavenApache Software Foundation/org.apache.wicket:wicket-corepkg:maven/Apache Software Foundation/org.apache.wicket:wicket-coreOther threatsAffected
  • >=9.0.0 <=9.23.0
  • >=10.0.0 <=10.9.0
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 upgrade Apache Wicket to version 10.10.0 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor's recommendation to upgrade. No other mitigation steps are specified.

Description

Use of Insufficiently Random Values, Protection Mechanism Failure vulnerability in Apache Wicket. This issue affects Apache Wicket: from 9.0.0 through 9.23.0, from 10.0.0 through 10.9.0. Users are recommended to upgrade to version 10.10.0, which fixes the issue.

References

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