CVE-2026-44378

HIGH

Botan: Quadratic complexity decoding BER indefinite length encodings

Title source: cna
STIX 2.1

Description

Botan is a C++ cryptography library. Prior to 3.12.0, certain patterns of indefinite length encodings in BER data could cause quadratic behavior in the parser, resulting in a denial of service. Such BER encodings were accepted even in structures which are required to be encoded as DER, which prohibits indefinite length encodings. This vulnerability is fixed in 3.12.0.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0032
EPSS Percentile 24.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-407
Status published
Products (2)
botan_project/botan < 3.12.0
randombit/botan < 3.12.0
Published May 27, 2026
Tracked Since May 27, 2026