- Exploited
- No known exploitation
- Fix
- Fixed in 10.0.0-M1, 10.3.0, 11.0.0-M2
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 10.0.0-M1, 10.3.0, 11.0.0-M2.
- Last modified
- Whether it needs action now or is a reference record, by fixed rules, with why. Last checked is when cve.now last re-read it.What do these mean? →
- Reference
- Last checked
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 11/100 · provisional
- The rating the maker of the software gives it. Shown when it differs from the CVSS level.What do these mean? →
- Low (apache)
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Apache TomEE's bundled JAAS login modules can reveal whether a username exists and compare credentials in a way that leaks timing information, letting an attacker enumerate valid accounts and possibly infer credential material. Because no CVSS vector or access requirements are given, the page should not claim how the bug is reached.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
The bundled JAAS login modules leak whether a username exists and compare credentials in a non-constant-time manner. A remote unauthenticated attacker can enumerate valid accounts and may infer credential material through timing analysis. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure?/25Unknown. No advisory context yet
- Reach10/20Affects Maven packages
- Severity1/10Rated low by apache
- No patch0/5No signal
What would change the score
- Would score about 66 if added to CISA KEV
- Would score about 61 if CISA's SSVC rates exploitation active
- Would score about 33 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 10.0.0-M1, 10.3.0, 11.0.0-M2.
Check your systems with an agent
Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.
Check whether my systems are affected by CVE-2026-86532 (Apache TomEE: Username enumeration and timing side channel in JAAS login modules), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-86532 (entry last updated 2026-11-10): Affected: - Maven package org.apache.openejb:openejb-core: from 4.0.0-beta-1, through 4.7.5 - Maven package org.apache.tomee:openejb-core: from 7.0.0-M1, fixed in 10.0.0-M1; from 10.0.0-M1, fixed in 10.3.0; from 11.0.0-M1, fixed in 11.0.0-M2 Fixed versions: 10.0.0-M1, 10.3.0, 11.0.0-M2. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-86532 is not listed as of cve.now's last read. This KEV status is for CVE-2026-86532 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Packages (Maven): find every lockfile in each project and run check_stack from the cve.now MCP server on each one. Compare the resolved versions, not the ranges a manifest declares, with the affected versions above. Include transitive dependencies. Verify against the linked advisories before concluding, and cite the date you read each one: - https://lists.apache.org/thread.html/oohwxbp6xx8dgl18xy1p1y6qjg59dgoh Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-86532 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-86532.
Timeline
- CVE published
- Record last updated
- First seen by cve.now
Affected versions
From 4.0.0-beta-1 · through 4.7.5
From 7.0.0-M1 · fixed in 10.0.0-M1; From 10.0.0-M1 · fixed in 10.3.0; From 11.0.0-M1 · fixed in 11.0.0-M2
Evidence 3
Vendor advisory · 1
Establishes: Affected and fixed versions.
- Advisory
CVE record · 2
Establishes: The identifier and description.
- Record
- Record
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-86532
Is CVE-2026-86532 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-86532?
org.apache.openejb:openejb-core (Maven): from 4.0.0-beta-1 through 4.7.5. org.apache.tomee:openejb-core (Maven): from 7.0.0-M1 before 10.0.0-M1; from 10.0.0-M1 before 10.3.0; from 11.0.0-M1 before 11.0.0-M2.Source: cve.now feed data
How do I fix CVE-2026-86532?
Upgrade to a fixed version: 10.0.0-M1, 10.3.0, 11.0.0-M2.Source: cve.now feed data