Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
OpenAM versions through 16.0.6 (the openam-federation-library Maven package, fixed in 16.1.1) have an improper authorization flaw in the Liberty Web Services SOAP receiver. An unauthenticated remote attacker who can reach the Liberty endpoints can write persistent entries into the Liberty Discovery store, including on users' LDAP entries and a shared root-realm branch. Upgrade to version 16.1.1. The source gives few details on downstream impact.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.3 | Critical | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:L/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0076, the 55th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:20 UTC First seen by agentprime
- 31 Oct 2026, 14:20 UTC Confirmed by OSV