HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies
Impact
HTTP::Body versions before 1.23_01 for Perl may allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies, potentially by a remote attacker. The vulnerability occurs due to inefficient regular expression complexity. A long line of hex digits can cause backtracking, taking time quadratic in the line's length.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.What to do
Upgrade to HTTP-Body 1.23_01 or later.
Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Vendor not supplied · CPANSec
HTTP-Body
1 range
Vendor not supplied · CPANSec
HTTP-Body
Package identity
pkg:cpan/HTTP-BodyIdentity supplied by CPANSec. Version matching requires compatible range evidence.
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affected
0 → before 1.23_01
custom versions
Other versions: unaffected
Original source description
HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.
In chunked mode, used when no content length is given, add() matches each chunk-size line with /^([\da-fA-F]+).*\x0D\x0A/. On a line of hex digits whose first LF has no CR before it, the digits and .* backtrack against each other, so a single add() takes time quadratic in the line's length. Nothing limits how long the line can be.
A remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-116285View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Contributing organizations · 1
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.