CVE-2026-112021 snac2 - Buffer Overflow

snac2 < 2.93 contains a heap-based buffer overflow caused by improper handling of \u0000 escape sequences in _xs_json_load_lexer(), letting unauthenticated remote attackers corrupt heap memory and crash the server via crafted JSON strings.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
18 October 2026
Updated
19 October 2026
Weakness
CWE-122

Vendor fix

Update to version 2.93 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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