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SUSE-SU-2026:2686-1 Not scored

Security update for apache2

This update for apache2 fixes the following issues - CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957). - CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935). - CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via `ajp_msg_check_header()` (bsc#1264163). - CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976). - CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP response (bsc#1264150). - CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server crash via malicious requests (bsc#1263956). - CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977). - CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest authentication (bsc#1263955). - CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows unauthenticated remote user to crash a child processes (bsc#1263954). - CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953). - CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952). - CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-termination check (bsc#1263951). - CVE-2026-34059: heap buffer overread and memory disclosure via `ajp_parse_data()` (bsc#1263950). - CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978). - CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955). - CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956). - CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962). - CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963). - CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965). - CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969). - CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a denial of service (bsc#1267970). - CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971). - CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-free (bsc#1267972). - CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503). Non security issue: - Update to 2.4.66 (jsc#PED-16334).

Exploit probability Not scored
Published June 29, 2026
Required by Not available
Last source change July 1, 2026

02 / AFFECTED SOFTWARE

Affected packages

SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS apache2
SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS apache2
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS apache2
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS apache2
SUSE:Linux Enterprise Server 15 SP4-LTSS apache2
SUSE:Linux Enterprise Server 15 SP5-LTSS apache2
SUSE:Linux Enterprise Server for SAP Applications 15 SP4 apache2
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 apache2

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities SUSE-SU-2026:2686-1

This update for apache2 fixes the following issues - CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957). - CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935). - CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via `ajp_msg_check_header()` (bsc#1264163). - CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976). - CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP response (bsc#1264150). - CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server crash via malicious requests (bsc#1263956). - CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977). - CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest authentication (bsc#1263955). - CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows unauthenticated remote user to crash a child processes (bsc#1263954). - CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953). - CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952). - CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-termination check (bsc#1263951). - CVE-2026-34059: heap buffer overread and memory disclosure via `ajp_parse_data()` (bsc#1263950). - CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978). - CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955). - CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956). - CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962). - CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963). - CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965). - CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969). - CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a denial of service (bsc#1267970). - CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971). - CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-free (bsc#1267972). - CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503). Non security issue: - Update to 2.4.66 (jsc#PED-16334).

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05 / REFERENCES

Further evidence