Dashboard / CVE-2026-15308

CVE-2026-15308

HIGH
MEDIUM Priority: 0.06 BB Relevance: 78/100
Published: 2026-07-09 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.

Weakness Classification (1)

Affected Software (16)

VendorProductVersion
python python < 3.10.21
python python 3.11.0 – 3.11.16
python python 3.12.0 – 3.12.14
python python 3.13.0 – 3.13.15
python python 3.14.0 – 3.14.7
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
python python 3.15.0
python python 3.15.0
python python 3.15.0

References & Advisories (11)

Bug Bounty Relevance

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

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

0.64%
Raw Score 0.006370
Percentile 50.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00637
2026-10-28
0.00637

Intelligence Sources

nvd ref →

External Links