CVE-2024-27199

JetBrains TeamCity: Relative Path Traversal

As of , CVE-2024-27199 in JetBrains TeamCity is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch now.

Exploited
Yes: CISA listed it on 20 April 2026
US federal deadline
4 May 202614 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
KnownCISA changed it from Unknown to Known on 21 April 2026.
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: blog.jetbrains.com and www.jetbrains.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.

CISA's description

In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible

The CVE record's description, from JetBrains

CVE published
4 March 2024
Assigned by
JetBrains
CVSS
7.3 High (CVSS 3.1, from the CNA)
CWE-23
Relative Path Traversal
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. CISA changed its entry. Edited: notes.
  4. CISA changed its entry. Ransomware use: Unknown to Known.
  5. The US federal deadline to fix it.

TeamCity: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2026-63077Deserialization of Untrusted DataJetBrains TeamCityPatch nowForensic triage required by CISA; ransomware use, listed within a year; Metasploit module0.90
CVE-2024-27198Authentication BypassJetBrains TeamCityPatch this weekRansomware use; Metasploit module; EPSS 0.990.99
CVE-2023-42793Authentication BypassJetBrains TeamCityPatch this weekRansomware use; Metasploit module; EPSS 0.990.99

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