Seeyon Zhiyuan OA Web Application System versions up to and including 7.0 SP1 improperly decode and parse the `enc` parameter in thirdpartyController.do. The decoded map values can influence session attributes without sufficient authentication/authorization checks, enabling attackers to assign a session to arbitrary user IDs. VulnCheck has observed this vulnerability being exploited in the wild as of 2025-10-30 at 00:30:40.855917 UTC.
Metrics
Affected Vendors & Products
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History
Fri, 31 Oct 2025 19:15:00 +0000
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ssvc
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Fri, 31 Oct 2025 10:15:00 +0000
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Seeyon
Seeyon zhiyuan Oa Web Application System |
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Seeyon
Seeyon zhiyuan Oa Web Application System |
Thu, 30 Oct 2025 21:30:00 +0000
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| Description | Seeyon Zhiyuan OA Web Application System versions up to and including 7.0 SP1 improperly decode and parse the `enc` parameter in thirdpartyController.do. The decoded map values can influence session attributes without sufficient authentication/authorization checks, enabling attackers to assign a session to arbitrary user IDs. VulnCheck has observed this vulnerability being exploited in the wild as of 2025-10-30 at 00:30:40.855917 UTC. | |
| Title | Seeyon Zhiyuan OA Web Application System < 7.0 SP1 Authentication Bypass | |
| Weaknesses | CWE-306 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2025-10-30T21:16:23.161Z
Updated: 2025-10-31T18:35:21.327Z
Reserved: 2025-10-30T20:08:37.632Z
Link: CVE-2021-4461
Updated: 2025-10-31T18:34:30.657Z
Status : Received
Published: 2025-10-30T22:15:41.633
Modified: 2025-10-31T19:15:48.247
Link: CVE-2021-4461
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