CVE-2026-30910 Crypt::Sodium::XS versions through 0.001000 for Perl has potential integer overflows
Integer overflows in Crypt::Sodium::XS can cause buffer overflows or crashes when processing extremely large inputs, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-30910?
CVE-2026-30910 is a high-severity vulnerability in IAMB Crypt::Sodium::XS, published on 8 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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
Weakness: CWE-190
Which versions are affected by CVE-2026-30910?
It affects 1 product.
Products include Iamb Crypt\.
How do I fix CVE-2026-30910?
No fix has been published for CVE-2026-30910 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-30910 being exploited?
There is no known exploitation of CVE-2026-30910 in the wild and no public exploit code.
Other vulnerabilities in IAMB Crypt::Sodium::XS
Sources
Also known as GHSA-2qjg-jrhf-99vr.