SB2026110549 - Multiple vulnerabilities in IBM Cloud Pak System
Published: November 5, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 vulnerabilities.
1) Improper access control (CVE-ID: CVE-2026-24072)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper access control in various Apache HTTP Server modules when evaluating ap_expr from .htaccess files. A local user can create a crafted .htaccess expression to disclose sensitive information.
The issue affects local .htaccess authors and allows reading files with the privileges of the httpd user.
2) Out-of-bounds read (CVE-ID: CVE-2026-34059)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a heap over-read in mod_proxy_ajp ajp_parse_data() when processing AJP messages from a backend server. A remote attacker can send a specially crafted AJP message to disclose sensitive information.
Exploitation requires Apache HTTP Server to connect to an untrusted or compromised AJP backend server.
3) Out-of-bounds read (CVE-ID: CVE-2026-34032)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper null termination leading to an out-of-bounds read in mod_proxy_ajp ajp_msg_get_string when parsing AJP string data. A remote attacker can send a specially crafted AJP message to disclose sensitive information.
Exploitation requires Apache HTTP Server to connect to an untrusted or compromised AJP backend server.
4) Double free (CVE-ID: CVE-2026-23918)
CWE-ID: CWE-415 - Double Free
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service and possibly execute arbitrary code.
The vulnerability exists due to a double free in Apache HTTP Server HTTP/2 handling when processing an early reset. A remote attacker can trigger an early reset condition to cause a denial of service and possibly execute arbitrary code.
The issue is specific to the HTTP/2 protocol.
5) Out-of-bounds read (CVE-ID: CVE-2026-33857)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in mod_proxy_ajp AJP getter functions when parsing AJP data. A remote attacker can send a specially crafted AJP message to disclose sensitive information.
Exploitation requires Apache HTTP Server to connect to an untrusted or compromised AJP backend server.
6) NULL pointer dereference (CVE-ID: CVE-2026-29169)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in mod_dav_lock when handling requests. A remote attacker can send a malicious request to cause a denial of service.
mod_dav_lock is not used internally by mod_dav or mod_dav_fs, and the only known use-case mentioned is mod_dav_svn earlier than version 1.2.0.
7) Information Exposure Through Timing Discrepancy (CVE-ID: CVE-2026-33006)
CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy
CVSSv4: 7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N]
The vulnerability allows a remote attacker to bypass Digest authentication.
The vulnerability exists due to a timing side-channel in mod_auth_digest when processing Digest authentication. A remote attacker can perform a timing attack to bypass Digest authentication.
8) NULL pointer dereference (CVE-ID: CVE-2026-33007)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in mod_authn_socache when handling requests in a caching forward proxy configuration. A remote attacker can send a malicious request to cause a denial of service.
The issue crashes a child process only in a caching forward proxy configuration.
9) HTTP response splitting (CVE-ID: CVE-2026-33523)
CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to manipulate HTTP responses.
The vulnerability exists due to improper neutralization of CRLF sequences in multiple Apache HTTP Server modules when forwarding a backend status line. A remote attacker can supply a malicious backend response to manipulate HTTP responses.
Exploitation requires an untrusted or compromised backend server.
10) Resource exhaustion (CVE-ID: CVE-2026-49975)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the HTTP/2 request handling and HPACK header processing when handling crafted HTTP/2 requests that use repeated indexed header references and a stalled flow-control window. A remote attacker can send specially crafted HTTP/2 requests to cause a denial of service.
The issue is reachable in the default HTTP/2 configuration.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.