Secuno
ENNL
Book demo

CVE-2026-30909

Timlegge Crypt::nacl::sodium integer overflow

9.8 CRITICALEPSS 0.78%
  1. Published8 Mar 2026

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Timlegge Crypt::nacl::sodium< 2.003

Remediation

Fixed in
Timlegge Crypt::nacl::sodium≥ 2.003

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-9722910.0
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before…
CVE-2026-195698.8
dynamic_object_create() in kernel/userspace/userspace.c computed the backing allocation…
CVE-2026-593469.3
VMware Workstation and Fusion contain an integer-overflow vulnerability. A malicious…
CVE-2026-1064179.6
Integer overflow in Media in Google Chrome prior to 155.0.8059.39 allowed a remote…
CVE-2026-1062399.6
Integer overflow in WebGL in Google Chrome on on Android prior to 155.0.8059.39 allowed…
CVE-2026-935468.8
Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an…

Frequently asked

Is CVE-2026-30909 being actively exploited?

CVE-2026-30909 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.78%.

How severe is CVE-2026-30909?

CVE-2026-30909 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.78% probability of exploitation.

Which products are affected by CVE-2026-30909?

Affected products include Timlegge Crypt::nacl::sodium.

How do I fix CVE-2026-30909?

Upgrade affected software to a fixed version, for example Timlegge Crypt::nacl::sodium 2.003 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-30909 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.