SB20261110202 - Multiple vulnerabilities in Oracle Access Manager
Published: November 10, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 vulnerabilities.
1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-64607)
CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime
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 improper resource management in the classic i/o model HttpClient connection handling when processing a response with an invalid or unsupported content-encoding header value. A remote attacker can send a response with an invalid or unsupported content-encoding header value to cause a denial of service.
Only the classic i/o model is affected; the async i/o model is not affected.
2) Resource exhaustion (CVE-ID: CVE-2026-54399)
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/1.1 message parser when processing messages with an excessive number of headers or excessive header length. A remote attacker can send a specially crafted HTTP message to cause a denial of service.
The issue leads to memory exhaustion.
3) Improper input validation (CVE-ID: CVE-2026-87296)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to gain access to sensitive information.
4) Improper input validation (CVE-ID: CVE-2026-83409)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.
5) Improper input validation (CVE-ID: CVE-2026-83407)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to read, manipulate or delete data.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to read, manipulate or delete data.
6) Improper input validation (CVE-ID: CVE-2026-83426)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to read and manipulate data.
7) Improper input validation (CVE-ID: CVE-2026-87251)
CWE-ID: CWE-20 - Improper input validation
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 non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.
8) Improper input validation (CVE-ID: CVE-2026-87337)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to improper input validation within the Authentication Engine component in Oracle Access Manager. A remote non-authenticated attacker can exploit this vulnerability to read and manipulate data.
Remediation
Install update from vendor's website.