How severe is CVE-2026-76244?

CVE-2026-76244 has a CVSS 4.0 base score of 9.1, rated critical severity.

Is CVE-2026-76244 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-76244?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-76244 published?

CVE-2026-76244 was published on 2026-08-19.

CVE-2026-76244

CVE-2026-76244 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: Critical (CVSS 4.0 base score 9.1)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Published: 2026-08-19
Last modified: 2026-08-19

Description

stigmem-node contains an insecure default configuration vulnerability that allows federation traffic to traverse networks without mTLS protection when non-loopback endpoints are enabled. Operators who explicitly disabled mTLS while binding federation to non-loopback addresses expose federation traffic to cleartext interception and man-in-the-middle attacks.

Frequently asked questions

What is CVE-2026-76244?: stigmem-node contains an insecure default configuration vulnerability that allows federation traffic to traverse networks without mTLS protection when non-loopback endpoints are enabled. Operators who explicitly disabled mTLS while binding federation to non-loopback addresses expose federation traffic to cleartext interception and man-in-the-middle attacks.
How severe is CVE-2026-76244?: CVE-2026-76244 has a CVSS 4.0 base score of 9.1, rated critical severity.
Is CVE-2026-76244 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-76244?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-76244 published?: CVE-2026-76244 was published on 2026-08-19.

References

Other CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities

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