CVE-2026-86532: JAAS login modules credential timing and username enumeration

CVE-2026-86532 · Severity: info · Published 2026-11-10

Bundled Java Authentication and Authorization Service (JAAS) login modules contain two security flaws: they reveal whether a username exists in the system, and they compare credentials in a way that is vulnerable to timing analysis. A remote attacker without credentials can enumerate valid usernames and potentially infer password information by measuring response times, but exploitation requires network access and careful timing measurements.

Technologies: <UNKNOWN>.

Quick answers

Is CVE-2026-86532 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-86532 being exploited in the wild.
How severe is CVE-2026-86532?
Informational severity, published 10 November 2026.
Which products and versions are affected?
<UNKNOWN>.
Is there a fix for CVE-2026-86532?
Yes: fixed in 10.3.0, 11.0.0-M2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-86532 attacked?
It is attacked over the network.
Am I affected by CVE-2026-86532?
Check whether you run <UNKNOWN>. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 10.3.0, 11.0.0-M2

Technical details

The vulnerability consists of two information disclosure issues in JAAS login modules: user enumeration through differential error messages or behavior, and non-constant-time password comparison enabling timing attacks to infer credential material. Both are remote unauthenticated attacks. A fix is available in version 10.3.0 and 11.0.0-M2.

Affected products

  • <UNKNOWN>

Timeline

  • 2026-11-10: disclosed

References

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