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7.5 High

CVE-2026-42402 Apache Neethi is vulnerable to a Denial of Service attack through algorithmic complexity in policy normalization

Description

Apache Neethi is vulnerable to a Denial of Service attack through algorithmic complexity in policy normalization. Specially crafted WS-Policy documents can trigger an exponential Cartesian cross-product expansion during the normalization process, causing unbounded memory allocation that exhausts the JVM heap. This occurs when the normalization process generates an excessive number of policy alternatives without bounds, leading to runtime memory exhaustion. Users should upgrade to 3.2.2 which limits the maximum number of normalized policy alternatives.

Affected products and versions

Product Affected versions Fixed in
Apache Neethi 3.2 earliest → < 3.2.2 3.2.2

References

Timeline

  1. Published
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Other CVEs of Apache Neethi

The 11 CVEs of Apache Neethi →
CVE-2026-91867 When Neethi fetches a remote policy reference, it only limits the time per read, not the whole transfer, so a server… Not rated CVE-2026-91866 A specially crafted pair of WS-Policy documents can force Neethi's policy-intersection to do exponential amounts of… Not rated CVE-2026-91865 A small WS-Policy document using repeated policy references can force Neethi to re-expand the same references… Not rated CVE-2026-91864 A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into… Not rated
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