What is CVE-2025-49619?

CVE-2025-49619 is a high-severity vulnerability in Skyvern, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.5/10. Published 2025-06-07.

How severe is CVE-2025-49619?

High severity. CVSS v3 base score is 8.5 out of 10.

Is CVE-2025-49619 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Skyvern

CVE-2025-49619

Skyvern through 0.1.85 is vulnerable to server-side template injection (SSTI) in the Prompt field of workflow blocks such as the Navigation v2 Block. Improper sanitization of Jinja2 template input allows authenticated users to inject craft…

EPSS: 0.735 (98.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Skyvern — versions 0

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-49619?: CVE-2025-49619 is a high-severity vulnerability in Skyvern, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.5/10. Published 2025-06-07.
How severe is CVE-2025-49619?: High severity. CVSS v3 base score is 8.5 out of 10.
Is CVE-2025-49619 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.