Allocation of Resources Without Limits or Throttling Affecting rust-rustls package, versions <0.23.46+ds-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RUSTRUSTLS-22347276
  • published8 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123610  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Debian:unstable rust-rustls to version 0.23.46+ds-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-rustls package and not the rust-rustls package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large history window. Malicious peers can send a certificate with a five-byte Brotli header requesting up to 1 GiB before authentication, aborting Brotli-enabled clients or client-authenticating servers whose allocator cannot satisfy the request.

CVSS Base Scores

version 3.1