What is CVE-2026-48834?

CVE-2026-48834 is a high-severity vulnerability in Apache Answer, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-05.

How severe is CVE-2026-48834?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Apache Answer

CVE-2026-48834

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Vulnerability class: DoS (Denial of Service)

Published 2026-08-05 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.5th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Apache Answer
Apache Software Foundation Answer — versions 0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

lists.apache.org/thread/0yg5smwnbrhqs55m5h61gn42mcs8s95p (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-48834?: CVE-2026-48834 is a high-severity vulnerability in Apache Answer, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-05.
How severe is CVE-2026-48834?: High severity. CVSS v3 base score is 7.5 out of 10.