CVE Explorer
CVE-2026-53540
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.31, parse_form() did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"python-multipart","vendor":"Kludex","versions":[{"status":"affected","version":"< 0.0.31"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:818e67a173dd8a14686256002f5f7f4dbca02d8a03bda55fb530ad254e9bd971 · sha256:0cc4a85531dd03b2… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:818e67a173dd8a14686256002f5f7f4dbca02d8a03bda55fb530ad254e9bd971 · sha256:0cc4a85531dd03b2… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-1284","description":"CWE-1284: Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:818e67a173dd8a14686256002f5f7f4dbca02d8a03bda55fb530ad254e9bd971 · sha256:0cc4a85531dd03b2… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/Kludex/python-multipart/security/advisories/GHSA-v9pg-7xvm-68hf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Kludex/python-multipart/security/advisories/GHSA-v9pg-7xvm-68hf"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:818e67a173dd8a14686256002f5f7f4dbca02d8a03bda55fb530ad254e9bd971 · sha256:0cc4a85531dd03b2… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.