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Vulnerabilities

Vulnerability · CVE-2026-9079

stale proxy password leak

Published Jul 3, 2026 · catalog updated Sep 15, 2026 · stale proxy password leak

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-2026-9079. EPSS is 1.06%. Act only if a listed version of stale proxy password leak is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (stale proxy password leak).
  • 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
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.06%
Remediation
Not established
Affected products
vendor curl curl

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

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-2026-9079

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-2026-9079. EPSS is 1.06%. Act only if a listed version of stale proxy password leak 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-522: Insufficiently Protected Credentials. EPSS 1.06%. 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 had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

  2. Oct 20, 2026 · CISA ICS Advisories

    Detected

    CVE-2026-9079 is listed by Hitachi Energy RTU500 Product.

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2026-9079

    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-2026-9079

    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-2026-9079

    libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-9079

    30-day exploitation probability 1.06%

    first.org

References

Freshness

Last verified in this catalog Oct 28, 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
  • FIRST EPSSOct 28, 2026
  • CISA Cybersecurity AdvisoriesOct 23, 2026
  • CVE.orgOct 23, 2026