How severe is CVE-2026-49376?

CVE-2026-49376 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-49376 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49376?

CVE-2026-49376 affects Jetbrains Teamcity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49376?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-49376 have an EU (EUVD) identifier?

Yes. CVE-2026-49376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33384.

When was CVE-2026-49376 published?

CVE-2026-49376 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2026-49376

CVE-2026-49376 is a medium-severity vulnerability in Jetbrains Teamcity with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33384
Weakness: CWE-863
Affected product: Jetbrains Teamcity
Published: 2026-05-29
Last modified: 2026-06-17

Description

In JetBrains TeamCity before 2026.1 insufficient username validation in the SAML plugin

Frequently asked questions

What is CVE-2026-49376?: In JetBrains TeamCity before 2026.1 insufficient username validation in the SAML plugin
How severe is CVE-2026-49376?: CVE-2026-49376 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-49376 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49376?: CVE-2026-49376 affects Jetbrains Teamcity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49376?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-49376 have an EU (EUVD) identifier?: Yes. CVE-2026-49376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33384.
When was CVE-2026-49376 published?: CVE-2026-49376 was published on 2026-05-29 and last updated on 2026-06-17.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

Affected products (1)

cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*

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