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›vulnerability›CVE-2026-15308
Name
CVE-2026-15308
Source
NVD ( link)Debian ( link)
Description
The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.
CWEs
CWE-400
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/python/cpython/commit/07efb08123ba9367a7107325adb9d5626dca1ca9Patch
https://github.com/python/cpython/commit/1e7956f1a722df9aabc509c30f8fbdc3a2b4fdc7Patch
https://github.com/python/cpython/commit/785df8f743800661961528970f8598edcd291c14Patch
https://github.com/python/cpython/commit/7933f4bf7131aa4140750f9404f5de0aa2969cedPatch
https://github.com/python/cpython/commit/bcf98ddbc40ec9b3ee87da0124a5660b19b7e606Patch
https://github.com/python/cpython/commit/c2390b9376e35a701ed3acc597b8fc87546c9b00Patch
https://github.com/python/cpython/commit/e9f92ac0b298292e7ff998e52cb8ccacfb27a0bdPatch
https://github.com/python/cpython/issues/153030Patch
https://github.com/python/cpython/pull/153031Issue Tracking
https://mail.python.org/archives/list/security-announce@python.org/thread/F6453LWKSHKCTWFLCOURWPLETNUIW2Z5/Mailing List
http://www.openwall.com/lists/oss-security/2026/07/09/4Third Party Advisory

Analysis#

Affected Component
Analysis
python3
Exploitable

Vulnerability Ratings#

8.7
CVSSv4
7.5
CVSSv31
NaN
other

Others affected components#

Name
Project
Project Version
Version
Status
python3
buildroot
2025.02.x
3.12.14
Not Affected
python3
buildroot
master
3.14.7
Not Affected
python3
openwrt
master
3.14.5-r2
Exploitable
python3
openwrt
openwrt-25.12
3.13.9-r3
Exploitable
python3
yocto
master
3.14.7
Not Affected
python3
yocto
scarthgap
3.12.13
Exploitable