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Message-ID: <eb0f917db157d752ff8bdd581c6437cc@cpansec.org>
Date: Sat, 07 Mar 2026 21:22:02 -0400
From: Timothy Legge <timlegge@...nsec.org>
To: Oss Security <oss-security@...ts.openwall.com>
Subject: CVE-2026-30910: Crypt::Sodium::XS versions through 0.001000 for Perl
has potential integer overflows
========================================================================
CVE-2026-30910 CPAN Security Group
========================================================================
CVE ID: CVE-2026-30910
Distribution: Crypt-Sodium-XS
Versions: through 0.001000
MetaCPAN: https://metacpan.org/dist/Crypt-Sodium-XS
Crypt::Sodium::XS versions through 0.001000 for Perl has potential
integer overflows
Description
-----------
Crypt::Sodium::XS versions through 0.001000 for Perl has potential
integer overflows.
Combined aead encryption, combined signature creation, and bin2hex
functions do not check that output size will be less than SIZE_MAX,
which could lead to integer wraparound causing an undersized output
buffer. This can cause a crash in bin2hex and encryption algorithms
other than aes256gcm. For aes256gcm encryption and signatures, an
undersized buffer could lead to buffer overflow.
Encountering this issue is unlikely as the message length would need to
be very large.
For bin2hex the input size would have to be > SIZE_MAX / 2
For aegis encryption the input size would need to be > SIZE_MAX - 32U
For other encryption the input size would need to be > SIZE_MAX - 16U
For signatures the input size would need to be > SIZE_MAX - 64U
Problem types
-------------
- CWE-190 Integer Overflow or Wraparound
Solutions
---------
Upgrade to version 0.001001
References
----------
https://metacpan.org/release/IAMB/Crypt-Sodium-XS-0.001001/changes
Credits
-------
Brad Barden <perlmodules@...0.org>, finder
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