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CVE-2026-59696 Affecting erlang package, versions <1:22.2.7+dfsg-1ubuntu0.5+esm2

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.71% (52nd percentile)

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  • Snyk IDSNYK-UBUNTU2004-ERLANG-19519182
  • published28 Sept 2026
  • disclosed1 Sept 2026
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Introduced: 1 Sep 2026

CVE-2026-59696  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 erlang to version 1:22.2.7+dfsg-1ubuntu0.5+esm2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream erlang package and not the erlang package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Improper Validation of Specified Quantity in Input vulnerability in Erlang/OTP stdlib allows a remote attacker to degrade availability by supplying a URI whose port component is a very long run of digits.

uri_string:get_port/1 passes the port substring to binary_to_integer/1 with no length bound, catching only error:badarg, so a syntactically valid port of up to roughly 1.26 million digits converts successfully and costs the calling process hundreds of milliseconds of arbitrary-precision arithmetic. The conversion is reached from every authority-parsing path in uri_string:parse/1, including the host, registered-name, and IPv4 and IPv6 forms. parse/1 is the documented interface for parsing URIs, so any application that parses an attacker-supplied URI is exposed without further configuration. The conversion function is documented to accept integers of any size, so bounding the input is the caller's responsibility.

This issue affects OTP from OTP 21.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to stdlib from 3.5 before 6.2.2.5, from 7.0 before 7.3.0.2, and from 8.0 before 8.0.4.