What is CVE-2026-75099?

CVE-2026-75099 is a medium-severity vulnerability in Apache Allura, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-08-24.

How severe is CVE-2026-75099?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Apache Allura

CVE-2026-75099

Unauthenticated REST disclosure of certain content items in Apache Allura. This issue affects Apache Allura: through 1.19.1. Users are recommended to upgrade to version 1.20.0, which fixes the issue.

Vulnerability class: Information Disclosure

Published 2026-08-24 · last modified 2026-08-28.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.7th percentile), scored 2026-10-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

lists.apache.org/thread/lnsfx58o6mx6m44qk4vzqrq8ccmrywcy (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-75099?: CVE-2026-75099 is a medium-severity vulnerability in Apache Allura, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-08-24.
How severe is CVE-2026-75099?: Medium severity. CVSS v3 base score is 5.3 out of 10.