CVE-2026-112063

EUVD-2026-103505
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 14.33%
Debian logo
Debian Releases
Debian Product
Codename
libstrophe
bookworm
undetermined
forky
undetermined
sid
undetermined
trixie
undetermined
Common Weakness Enumeration
References
https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c
https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.c
https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow
https://www.vulncheck.com/advisories/libstrophe-through-0.14.0-stack-based-buffer-overflow-via-scram-salt-in-scram-hi
https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow