CVE-2026-49379: JetBrains TeamCity · CWE-522
Affects JetBrains TeamCitySource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 2026.1 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2026.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade TeamCity and org.jetbrains.teamcity/teamcity-server to 2026.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsTeamCity | Affected
| Fixed in
|
Mavenorg.jetbrains.teamcity/teamcity-serverpkg:maven/org.jetbrains.teamcity/teamcity-serverOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, limit network access to TeamCity instances and restrict user privileges to reduce exposure risk.
Description
CVE-2026-49379 is a medium severity vulnerability in JetBrains TeamCity versions before 2026.1 where credentials could be exposed in thread names. This exposure could allow an attacker with network access and low privileges to obtain sensitive credential information. The vulnerability does not impact integrity or availability but has high confidentiality impact.