Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
A vulnerability was determined in Duende IdentityServer4 up to 4.1.2. The affected element is an unknown function of the file /connect/authorize of the component Token Renewal Endpoint. This manipulation of the argument id_token_hint causes improper authentication. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. This vulnerability only affects products that are no longer supported by the maintainer.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-03-18 | 1 | Disclosure1 |
| 2026-08-05 | 1 | General1 |
CVE-2026-4349: IdentityServer4 Improper Authentication Bug - What It Means for Your Business and How to Respond https://hubs.ly/Q04rZ0VG0
Post summary
The provided text only lists the CVE title and a link, without any explicit detail about PoC, exploit, patches, technical specifics, or active exploitation claims.
CVE-2026-4349 A vulnerability was determined in Duende IdentityServer 4. The affected element is an unknown function of the file /connect/authorize of the component Token Renewal End… https://www.cve.org/CVERecord?id=CVE-2026-4349
Post summary
The text announces CVE‑2026‑4349 in Duende IdentityServer 4, noting an issue in the /connect/authorize component, but provides no further detail on exploitation or mitigation.