CVE-2024-14031
Buffer overwrite in Sereal::Encoder (Zstd) may write out-of-bounds.
Is CVE-2024-14031 being exploited?
Not confirmed. CVE-2024-14031 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2024-14031?
CVE-2024-14031 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2024-14031?
Yes. A fix has been recorded for CVE-2024-14031. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2024-14031 affect?
CVE-2024-14031 affects Sereal::Encoder (Perl) 4.000-4.009_002 with embedded Zstandard. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2024-14031?
Upgrade to patched Sereal::Encoder with updated Zstd
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Memory corruption via Zstd one-pass compression; crashes or arbitrary writes in affected Perl apps.
Patch when possible
- affected>= 4.000 and <= 4.009_002
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.