python: Python: CPU Denial of Service in HTML parser via repeated unterminated markup declarations

A flaw was found in Python. Its incremental HTML parser can be exploited by a remote attacker. By sending specially crafted, uncontrolled data with repeated, incomplete markup declarations, the attacker can cause the system to consume excessive central processing unit CPU resources. This leads to...

Ubuntu 16.04 LTS : Python vulnerability (USN-8524-1)

The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8524-1 advisory. It was discovered that Python did not use sufficient entropy for Expat hash-flooding protection in the xml.parsers.expat and xml.etree.ElementTree modules. An...

CVE-2026-15308

A flaw was found in Python. Its incremental HTML parser can be exploited by a remote attacker. By sending specially crafted, uncontrolled data with repeated, incomplete markup declarations, the attacker can cause the system to consume excessive central processing unit CPU resources. This leads to...

CVE-2026-15308

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

CVE-2026-15308

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

CVE-2026-15308 Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

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

CVE-2026-15308

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

CVE-2026-15308 Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

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

PSF-2026-33

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

CVE-2026-15308 Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

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

CVE-2026-15308

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

CVE-2026-15308

The CVE-2026-15308 issue concerns Python’s incremental HTML parser (html.parser.HTMLParser) where the feed() path can cause CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data. The root cause is tied to how unterminated markup declarations are...

EUVD-2026-42638

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

CVE-2026-15308

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

USN-8520-1: Expat vulnerability

It was discovered that Expat used insufficient entropy when generating hash salt values for its internal hash table. An attacker could use this to craft an XML document that triggers hash flooding, leading to a denial of service...

CVE-2026-31982

An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated attacker can craft a request to the SAML sign-in endpoint and poison the cached SAML redirection for other users who...

EUVD-2026-42457

Inappropriate implementation in Forms in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to inject arbitrary scripts or HTML UXSS via a crafted HTML page. Chromium security severity: High...

EUVD-2026-42454

Inappropriate implementation in Forms in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. Chromium security severity: High...

PT-2026-57132

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

PT-2026-56871

Name of the Vulnerable Software and Affected Versions CPython affected versions not specified Description The incremental HTML parser html.parser.HTMLParser contains an issue that allows for CPU denial-of-service when processing uncontrolled data. The root cause is improper input handling that...