CVE-2026-13423

CRITICAL
INFO Priority: 0.09 BB Relevance: 80/100
Published: 2026-07-29 Modified: 2026-11-05 First seen: 2026-11-05 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: High

Description

The Streamit WordPress theme before 4.5.2 does not perform any authorization or nonce verification on one of its unauthenticated AJAX routes, which invokes an attacker-supplied PHP function with an attacker-supplied argument array, allowing unauthenticated attackers to call arbitrary functions (for example to create an administrator account), leading to privilege escalation and remote code execution.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
Unknown Streamit 0 < 4.5.2

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.96%
Raw Score 0.009630
Percentile 62.2%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00963
2026-11-12
0.00963
2026-11-10
0.00963
2026-11-09
0.00963
2026-11-08
0.00963
2026-11-07
0.00963
2026-11-06
0.00963
2026-11-05
0.00963
2026-11-04
0.00963

Intelligence Sources

mitre ref →
nvd ref →