Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded buffering when decoding chunked request bodies
Impact
Starlet versions 0.20 before 0.33 for Perl have a memory exhaustion weakness via unbounded buffering when decoding chunked request bodies, allowing a remote attacker to exhaust a worker's memory with a single request. The issue is due to the lack of limits on chunk-size lines. A remote attacker can exploit this vulnerability.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.What to do
Upgrade to Starlet 0.33 or later.
Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Vendor not supplied · CPANSec
Starlet
1 range
Vendor not supplied · CPANSec
Starlet
Package identity
pkg:cpan/StarletIdentity supplied by CPANSec. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
0.20 → before 0.33
custom versions
Other versions: unaffected
Original source description
Starlet versions from 0.20 before 0.33 for Perl allow memory exhaustion via unbounded buffering when decoding chunked request bodies.
The decoder adds each read to one buffer of unconsumed input. Nothing limits the length of a chunk-size line, so a line without a CRLF grows the buffer for as long as the client keeps sending, and the read timeout restarts after every read. The data of a large chunk is also held in the buffer until the whole chunk has arrived.
A remote attacker can exhaust a worker's memory with a single request.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-116128View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Contributing organizations · 1
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.