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Vulnerabilities

Vulnerability · CVE-2026-8932

incomplete mTLS config matching in conn reuse

Published Jul 3, 2026 · catalog updated Sep 15, 2026 · incomplete mTLS config matching

Last checked Oct 30, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-8932. EPSS is 0.40%. Act only if a listed version of incomplete mTLS config matching is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (incomplete mTLS config matching).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Not established
Affected products
vendor curl curl

libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them match too easily. In particular options related to the private key.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor curl curlversion unspecified

How to fix CVE-2026-8932

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-8932. EPSS is 0.40%. Act only if a listed version of incomplete mTLS config matching is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-305. EPSS 0.40%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 15, 2026 · CVE.org

    Updated

    libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them ma

  2. Oct 20, 2026 · CISA ICS Advisories

    Detected

    CVE-2026-8932 is listed by Hitachi Energy RTU500 Product.

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2026-8932

    View CSAF Summary Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. These vulnerabilities if exploited can have impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Ac

    cisa.gov
  • CISA ICS AdvisoriesGovernment advisoryCVE-2026-8932

    View CSAF Summary Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. These vulnerabilities if exploited can have impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Ac

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-8932

    libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. How

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-8932

    30-day exploitation probability 0.40%

    first.org

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CISA ICS AdvisoriesOct 30, 2026
  • CISA Cybersecurity AdvisoriesOct 23, 2026
  • CVE.orgOct 23, 2026
  • FIRST EPSSOct 23, 2026