CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2026-30909
Critical (9.8) in timlegge crypt\. EPSS 0.6% chance of exploitation in the next 30 days.
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
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)
- CWE
- CWE-190
- Published
- Modified
- Record from
- the NVD, synced
Affected
- timlegge:crypt\
References
- https://github.com/cpan-authors/crypt-nacl-sodium/pull/24.patch
- 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