VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVPublished EPSS 0.2% probability of exploitation in 30 daysFound by AI: Anthropic (Claude)
Apache

CVE-2026-111259: Apache TomEE: Predictable HTTP session identifiers in embedded server

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?
0.2%

EPSS score, percentile 10.4 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
Not scored

The CVE record carries no CVSS score.

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

  • from 7.0.0-M1 to before 10.0.0-M1
  • from 10.0.0-M1 to before 10.3.0
  • from 11.0.0-M1 to before 11.0.0-M2

Versions by product

Source: CISA KEV 2026.11.10, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

Description

Apache TomEE: Predictable HTTP session identifiers in embedded server

The embedded server generates HTTP session identifiers with a non-cryptographic random number generator by default. A remote attacker who observes a session identifier can predict the identifiers issued to other users and hijack their sessions, if the application relies on HTTP sessions for authentication. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

Source: CVE List, as of . About the data.

What to do

Advisories and patches

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (1 product)
Apache Software Foundation Apache TomEE
StatusVersions
Affectedfrom 7.0.0-M1 to before 10.0.0-M1
Affectedfrom 10.0.0-M1 to before 10.3.0
Affectedfrom 11.0.0-M1 to before 11.0.0-M2

Versions not listed are: unaffected.

Source: CVE List, as of . About the data.

Weakness

CWE-338
  • CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published

Known exploited Apache vulnerabilities

  • CVE-2016-3081: Apache Struts Command Injection Vulnerability (added )
  • CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability (added )
  • CVE-2026-34197: Apache ActiveMQ Improper Input Validation Vulnerability (added )
  • CVE-2024-38475: Apache HTTP Server Improper Escaping of Output Vulnerability (added )
  • CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability (added )