CVE-2026-103995EUVD-2026-111382GHSA-PP6R-VFFX-RVQJPSF-2026-47
Lenient parsing of integers for response body and chunk framing
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.16.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
This vulnerability affects software that parses HTTP responses, including HTTP client libraries and tools that read response bodies and chunked transfer encoding. Because these parsers accept non-hexadecimal or negative integer values when handling lengths and chunk sizes, they may misinterpret the contents of an HTTP response.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.
Timeline
- CVE published
- First seen by cve.now
- Record last updated
Affected versions
- Python Software Foundation CPython
fixed in 3.16.0