What’s Vulnerable › Vulnerabilities

CVE-2026-112063: libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-19
• Weakness: CWE-121

Description

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.

Affected products

• strophe libstrophe: through 0.14.0

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

Get alerted when CVE-2026-112063 or the next vulnerability affects your stack