CVE-2026-112063 PUBLISHED

libstrophe through 0.14.0 contains a stack-based buffer overflow vulnerability in SCRAM_Hi that allows malicious XMPP servers to overflow a 128-byte stack buffer by sending an oversized SCRAM salt. Attackers can send a server-first-message whose s= attribute decodes to more than 124 bytes, aborting the client or overwriting stack memory in NDEBUG builds.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow
• https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.c
• https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c
• VulnCheck Advisory: libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi

• Stack-based Buffer Overflow CWE