Dashboard / CVE-2026-128021

CVE-2026-128021

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: Low
VI: None
VA: None

Description

FrankenPHP before 1.13.2 contains an information disclosure vulnerability that allows later clients to read earlier clients' libxml errors because worker mode never resets LIBXML(error_list) between requests. Attackers sending requests to the same worker thread can call libxml_get_errors() or libxml_get_last_error() to obtain other clients' parsed-document fragments and server filesystem paths.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
php frankenphp 0 < 1.13.2
php frankenphp 0 < 1.13.2

References & Advisories (2)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.28%
Raw Score 0.002800
Percentile 20.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00280
2026-11-13
0.00297

Intelligence Sources

mitre ref →
nvd ref →

External Links