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ALSA-2021:3816 Not scored

Important: httpd:2.4 security update

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es): * httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" (CVE-2021-40438) * httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Exploit probability Not scored
Published October 12, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 mod_http2
AlmaLinux:8 mod_md

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:3816

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es): * httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" (CVE-2021-40438) * httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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05 / REFERENCES

Further evidence