CVE-2026-6019

LOW
INFO Priority: 0.00 BB Relevance: 49/100
Published: 2026-04-22 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

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

Description

http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.

Weakness Classification (2)

Affected Software (9)

VendorProductVersion
python python < 3.13.14
python python 3.15.0
python python 3.15.0
python python 3.15.0
python python 3.15.0
python python 3.15.0
python python 3.15.0
python python 3.15.0
python python 3.15.0

Bug Bounty Relevance

49 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

2.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/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

0.21%
Raw Score 0.002110
Percentile 11.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00211
2026-10-28
0.00211

Intelligence Sources

nvd ref →