CVE-2026-112063CWE-121

CVE-2026-112063

Medium · published October 18, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
14.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
6.0 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00241 · 14.3th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-18T17:16Z
References (5)
https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c · [email protected]https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.c · [email protected]https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow · [email protected]https://www.vulncheck.com/advisories/libstrophe-through-0.14.0-stack-based-buffer-overflow-via-scram-salt-in-scram-hi · [email protected]https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 20 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 18 OCT 12:19Z
    libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi
    cvelistv5
  • 18 OCT 12:19Z
    libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi
    cvelistv5