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CVE-2026-8468 is a low severity vulnerability with a CVSS score of 0.0. No known exploits currently, and patches are available.
Lower probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
An Allocation of Resources Without Limits or Throttling vulnerability in Plug.Conn.read_part_headers/2 allows an unauthenticated attacker to exhaust server memory by sending a crafted multipart/form-data request, causing a denial of service.
Plug.Conn.read_part_headers/2 in lib/plug/conn.ex does not obey its :length parameter. There is no upper bound on the size of the accumulated buffer. By contrast, the sibling function read_part_body has an explicit byte_size(acc) > length guard that stops accumulation once a limit is reached. No such guard exists in read_part_headers.
This is a denial-of-service vulnerability. Any application using Plug.Parsers with the :multipart parser, or calling Plug.Conn.read_part_headers/2 directly, is affected. An unauthenticated remote attacker can trigger the issue by sending crafted HTTP requests with no special privileges.
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