Home/CVE/In JetBrains Ktor before 1.5.0, a birthday attack on SessionStorage key was possible.
CVE

CVE-2021-25761

In JetBrains Ktor before 1.5.0, a birthday attack on SessionStorage key was possible.

In JetBrains Ktor before 1.5.0, a birthday attack on SessionStorage key was possible.

MEDIUM · CVSS 5.3 EPSS 2e-05
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-326Inadequate Encryption Strength
▤

Affected Products & Versions

1
jetbrains ktor< 1.5.0
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Feb 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://blog.jetbrains.comProduct
https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/Vendor Advisory
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