CVE-2026-123539

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 45/100
Published: 2026-11-08 Modified: 2026-11-12 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: Passive
AT: None
VC: Low
VI: Low
VA: None

Description

OpenAM before 16.1.4 contains a stored cross-site scripting vulnerability that allows privileged attackers to inject script by placing markup in a user's display name. When the victim reaches the OAuth 2.0 / OpenID Connect consent page, the unencoded name executes script that can steal the OpenAM session cookie to impersonate the user.

Affected Software (2)

VendorProductVersion
OpenIdentityPlatform OpenAM 0 < 16.1.4
OpenIdentityPlatform OpenAM 0 < 16.1.4

Bug Bounty Relevance

45 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

4.8 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001800
Percentile 7.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00180
2026-11-12
0.00180
2026-11-10
0.00180
2026-11-09
0.00180
2026-11-08
0.00180

Intelligence Sources

mitre ref →
nvd ref →