Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP server
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes the issue.
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This buffer over-read vulnerability occurs when the server processes outbound Online Certificate Status Protocol (OCSP) requests directed to an attacker-controlled OCSP server. This could allow a remote attacker to read sensitive information from memory or cause a denial of service."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","description":"Out-of-bounds Read","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-44185"},{"name":"RHBZ#2486397","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2486397"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44185.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:34109"}],"solutions":[{"lang":"en","value":"RHSA-2026:34109: Red Hat Enterprise Linux AppStream (v. 10)"}],"timeline":[{"lang":"en","time":"2026-06-08T16:01:37.898Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-08T15:22:11.809Z","value":"Made public."}],"title":"httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server","workarounds":[{"lang":"en","value":"To mitigate this issue, ensure that Apache HTTP Server is configured to only communicate with trusted OCSP responders. If OCSP validation or stapling is not a critical requirement for your deployment, consider disabling it. This can be achieved by adjusting mod_ssl directives in your Apache HTTP Server configuration. \n\nFor example, add or modify the following lines:\n\n~~~\nSSLOCSPEnable off\nSSLUseStapling off\n~~~\n\nAfter modifying the configuration, reload the httpd service for the changes to take effect safely without interrupting active connections:\n\n~~~\nsudo systemctl reload httpd\n~~~"}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-07-02T12:05:26.779Z"}}]}}