CVE-2026-123543 (GCVE-0-2026-123543)
Vulnerability from cvelistv5 – Published: 2026-11-08 01:37 – Updated: 2026-11-08 01:37
VLAI
EPSS
VEX
Title
OpenAM before 16.1.4 Unauthenticated DoS via Unbounded Java Deserialisation
Summary
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.
Severity
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/OpenIdentityPlatform/OpenAM/se… | vendor-advisory |
| https://www.vulncheck.com/advisories/openam-befor… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenIdentityPlatform | OpenAM |
Affected:
0 , < 16.1.4
(semver)
Unaffected: 16.1.4 (semver) |
Date Public
2026-10-22 00:00
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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