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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
strophe libstrophe unaffected
Version Status Constraints
0 affected ≤ 0.14.0

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/strophe/libstrophe/blob/0.14.0/src/sasl.c cve-icon cve-icon
https://github.com/strophe/libstrophe/blob/0.14.0/src/scram.c cve-icon cve-icon
https://hackmd.io/@haindpwn/libstrophe-scram-salt-stack-overflow cve-icon cve-icon
https://www.vulncheck.com/advisories/libstrophe-through-0.14.0-stack-based-buffer-overflow-via-scram-salt-in-scram-hi cve-icon cve-icon
History

Sun, 18 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title libstrophe through 0.14.0 Stack-Based Buffer Overflow via SCRAM Salt in SCRAM_Hi
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 6, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-18T12:19:52.787Z

Reserved: 2026-10-18T12:00:08.233Z

Link: CVE-2026-112063

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-18T13:16:38.893

Modified: 2026-10-18T13:16:38.893

Link: CVE-2026-112063

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T14:15:14Z

Weaknesses