CVE-2026-86589

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 61/100
Published: 2026-10-19 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

Incorrect implementation of authentication algorithm vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. A flaw in the User Center login integration can cause a newly created external user session to omit its external identity, allowing subsequent requests to bypass central account suspension or deletion checks until the session expires or is revoked. Users are recommended to upgrade to version 2.0.3, which fixes the issue.

Affected Software (1)

VendorProductVersion
Apache Software Foundation Apache Answer 0

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.25%
Raw Score 0.002540
Percentile 16.9%
Date 2026-10-31

EPSS Trend

2026-10-31
0.00254
2026-10-30
0.00239

Intelligence Sources

mitre ref →
nvd ref →