CVE-2026-123543
OpenAM before 16.1.4 Unauthenticated DoS via Unbounded Java Deserialisation
OpenAM before 16.1.4 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server resources by sending serialized Java data without size or structure limits. Attackers can send small crafted requests to remote SDK endpoints, classic login pages, or the administration console to block authentication, session validation and policy decisions.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| OpenAM OpenIdentityPlatform org.openidentityplatform.openam/openam-shared
maven |
≥ 0; < 16.1.4 (affected, semver) 16.1.4 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| OpenAM OpenIdentityPlatform org.openidentityplatform.openam/openam-core
maven |
≥ 0; < 16.1.4 (affected, semver) 16.1.4 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| OpenAM OpenIdentityPlatform org.openidentityplatform.openam/openam-clientsdk
maven |
≥ 0; < 16.1.4 (affected, semver) 16.1.4 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| OpenAM OpenIdentityPlatform org.openidentityplatform.openam/openam-server-only
maven |
≥ 0; < 16.1.4 (affected, semver) 16.1.4 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
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 | CNA: VulnCheck |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: VulnCheck |
| 4.0 / 8.7 high |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-x7wr-5gxg-v833CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/openam-before-16.1.4-unauthenticated-dos-via-unbounded-java-deserialisationCNA: VulnCheck · third-party-advisory
- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-x7wr-5gxg-v833[email protected]
- https://www.vulncheck.com/advisories/openam-before-16.1.4-unauthenticated-dos-via-unbounded-java-deserialisation[email protected]
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