HIGHCVSS v3.1 7.4Vulnerability
CVE-2026-126265
SiYuan 2.1.0 before 3.8.9 contains a flaw where the loginAuth CAPTCHA challenge lives in a signed client-side cookie, allowing reuse of a solved challenge. Attackers can replay the original signed siyuan cookie with distinct wrong access codes to brute-force the code and gain an administrator session.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00356
- Cvss severity
- HIGH
- Cvss score
- 7.4
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 7.4
- Cvss version
- 3.1
- Cve id
- CVE-2026-126265
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Published at
- 2026-11-13T10:17:29.003
- Last modified
- 2026-11-13T10:17:29.133
- Epss percentile
- 0.29806
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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