CVE-2026-56968

MEDIUMNVD 5.33.7▼
EchelonGraph scoreMEDIUM confidence

Score 3.7 from GitHub Security Advisory (severity: LOW) published 2026-06-23. NVD baseline CVSS 5.3; sources differ by 1.6.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.

CVSS v3
5.3
EG Score
3.7(medium)
EPSS
15.1%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 29, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

[security] gsasl NTLM client: heap memory disclosure via short server ch

https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html
generic

[SECURITY] [DSA 6348-1] gsasl security update

https://lists.debian.org/debian-security-announce/2026/msg00259.html
generic

Index of /gnu/gsasl

https://ftp.gnu.org/gnu/gsasl/

Vendor Advisories for CVE-2026-56968(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 22:02 UTCEG score recompute
  6. 2026-07-05 22:02 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-02 20:55 UTCEG score recompute
  12. 2026-07-02 20:55 UTCGHSA enrichment
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-06-30 23:22 UTCEPSS rescore
  15. 2026-06-29 23:05 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  16. 2026-06-29 19:49 UTCEG score recompute
  17. 2026-06-29 19:49 UTCGHSA enrichment
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-26 18:43 UTCEG score recompute
  24. 2026-06-26 18:43 UTCGHSA enrichment
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 3 more
  1. 2026-06-24 14:05 UTCEPSS rescore
  2. 2026-06-23 17:35 UTCEG score recompute
  3. 2026-06-23 17:34 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56968?
CVE-2026-56968 is a medium vulnerability published on June 23, 2026. GNU SASL before 2.2.4 lacks sanitization of a short challenge in gsaslntlmclientstep in the NTLM client, which could result in memory disclosure via a crafted server.
When was CVE-2026-56968 disclosed?
CVE-2026-56968 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56968 actively exploited?
CVE-2026-56968 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56968?
CVE-2026-56968 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 3.7.
How do I remediate CVE-2026-56968?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56968, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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