CVE-2026-40347

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 28.4% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-26.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-17 23:56Z6 MO AGO

Last updated

2026-04-20 15:46Z6 MO AGO

Reserved

2026-04-10

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-834Excessive IterationClass
• CWE-1050Excessive Platform Resource Consumption within a LoopBase

Data version

5.2

Document digest

e106e5884bd08f38f8b1ec549134dfcf2457350e57739d6f85e0930298fb9e66

• github.comhttps://github.com/Kludex/python-multipart/security/advisories/GHSA-mj87-hwqh-73pjx_refsource_CONFIRM
• github.comhttps://github.com/Kludex/python-multipart/releases/tag/0.0.26x_refsource_MISC