CVE detail
CVE-2026-42561
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 23.0 · diversity 13.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
9 source links · newest first
- https://access.redhat.com/errata/RHSA-2026:44696access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM - https://access.redhat.com/errata/RHSA-2026:43038access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM - https://access.redhat.com/errata/RHSA-2026:42142access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM - https://access.redhat.com/errata/RHSA-2026:42132access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM - https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42561.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMay 13, 2026, 9:16 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2477309bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMay 13, 2026, 9:16 PM - https://access.redhat.com/security/cve/CVE-2026-42561access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM - https://access.redhat.com/errata/RHSA-2026:37275access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMay 13, 2026, 9:16 PM No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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