CVE-2023-34339 json
In JetBrains Ktor before 2.3.1 headers containing authentication data could be added to the exception's message
published 2023-06-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38420
- cvss
- 3.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
In JetBrains Ktor before 2.3.1 headers containing authentication data could be added to the exception's message
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- JetBrains Ktor
Classification
- Weakness
-
- CWE-209 Generation of Error Message Containing Sensitive Information
References
-
jetbrains.com
/privacy-security/issues-fixed/
patch, vendor-advisory
Sources
- CVE List CVE-2023-34339
- NVD CVE-2023-34339
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.