Vulnerability · Published Mar 8, 2026 · Assigned by CPANSec
CVE-2026-30909Crypt::NaCl::Sodium versions through 2.002 for Perl has potential integer overflows
Critical 9.8
In plain English
A critical-severity integer overflow in Crypt::NaCl::Sodium from TIMLEGGE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
Crypt::NaCl::Sodium versions through 2.002 for Perl has potential integer overflows. bin2hex, encrypt, aes256gcm_encrypt_afternm and seal functions do not check that output size will be less than SIZE_MAX, which could lead to integer wraparound causing an undersized output buffer. Encountering this issue is unlikely as the message length would need to be very large. For bin2hex() the bin_len would have to be > SIZE_MAX / 2 For encrypt() the msg_len would need to be > SIZE_MAX - 16U For aes256gcm_encrypt_afternm() the msg_len would need to be > SIZE_MAX - 16U For seal() the enc_len would need to be > SIZE_MAX - 64U
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TIMLEGGE | Crypt::NaCl::Sodium | 0 – through 2.002 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#L2116
- https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#L2310
- https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#L3304
- https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#L942
- https://github.com/cpan-authors/crypt-nacl-sodium/pull/24.patch patch
- https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.003/source/Changes release-notes
- http://www.openwall.com/lists/oss-security/2026/03/08/1