CVE-2026-112063
MEDIUM
CVSS 5.9
Published: 2026-10-18
Modified: 2026-10-19
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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.
Quick Facts
| CVE ID | CVE-2026-112063 |
| CVSS Score | 5.9 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H |
| Published | 2026-10-18 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c
- https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.…
- https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-over…
- https://www.vulncheck.com/advisories/libstrophe-through-0.14…
- https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-over…