Dashboard / CVE-2026-86413

CVE-2026-86413

CRITICAL
INFO Priority: 0.03 BB Relevance: 78/100
Published: 2026-10-20 Modified: 2026-10-30 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

When using an *ambient user* in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
curl curl 8.22.0
curl curl 8.21.0

References & Advisories (3)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.32%
Raw Score 0.003190
Percentile 24.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00319
2026-10-28
0.00319

Intelligence Sources

mitre ref →
nvd ref →

External Links