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TI-2026-76191 Aliases CVE-2026-112063GHSA-37wj-432m-6r6f

Stack-based buffer overflow in libstrophe via oversized SCRAM salt

Priority MEDIUM 60CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

libstrophe through 0.14.0 contains a stack-based buffer overflow (CWE-121) in SCRAM_Hi. A malicious XMPP server can send a server-first-message whose SCRAM salt decodes to more than 124 bytes, overflowing a 128-byte stack buffer. This aborts the client or overwrites stack memory in NDEBUG builds.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00283 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
strophelibstropheup to 0.14.0—No fix listedCNA
  • libstrophe Vendorstrophe Affected up to 0.14.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for libstrophe.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-112063
  2. 2026-10-18 Alias added: GHSA-37wj-432m-6r6f
  3. 2026-10-19 Priority changed: MEDIUM → LOW
  4. 2026-10-20 CISA SSVC decision points changed
  5. 2026-10-20 Priority changed: LOW → MEDIUM
  6. 2026-10-21 Affected versions changed · Red Hat
  7. 2026-10-21 CVSS score added · Red Hat

References

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences