Vulnerabilities in pkg:pypi/skyvern

PACKAGE
Advisory Identifier: GHSA-h92g-3xc3-ww2r
Share
Advisory Summary

CVE-2025-49619 is a HIGH (CVSS 8.5) skyvern has a jinja runtime vulnerability (CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine) affecting Skyvern libraries in the PyPI ecosystem. The issue involves skyvern has a jinja runtime leak. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/skyvern

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/skyvern. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-h92g-3xc3-ww2r CVE-2025-49619 HIGH Skyvern has a Jinja runtime leak

CVE-2025-49619 at a Glance

CVE Identifier CVE-2025-49619
GHSA Identifier GHSA-h92g-3xc3-ww2r
Severity HIGH
CVSS v3.1 Base Score 8.5
CWE Classification CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
Affected Product Skyvern
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-49619

To remediate this vulnerability, upgrade all affected Skyvern dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

skyvern fixed: Latest secure release 
pip install skyvern>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show skyvern

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-49619, inspect your installed packages using pip:

pip show skyvern

Analyze the terminal output to locate any version of Skyvern in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show skyvern command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine, where the product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. In Skyvern, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Skyvern through 0.2.0 has a Jinja runtime leak in sdk/workflow/models/block.py.

CVE-2025-49619 Affected Skyvern Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
skyvern
pypi/skyvern
PyPI
≤ 0.2.0

References

NVD — CVE-2025-49619 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-49619
Security Fix Commit FIX COMMIT
https://github.com/Skyvern-AI/skyvern/commit/db856cd8433a204c8b45979c70a4da1e119d949d
cristibtz.blog/posts/cve-2025-4961... WEB
https://cristibtz.blog/posts/CVE-2025-49619
cristibtz.github.io/posts/cve-2025-4961... WEB
https://cristibtz.github.io/posts/CVE-2025-49619
Skyvern Source Repository REPOSITORY
https://github.com/Skyvern-AI/skyvern
www.exploit-db.com/exploits/52335 WEB
https://www.exploit-db.com/exploits/52335

Frequently Asked Questions

What is CVE-2025-49619?
CVE-2025-49619 is a security vulnerability in Skyvern involving Skyvern has a Jinja runtime leak under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine.
Which Skyvern versions are affected?
Affected versions include releases prior to current release patches across affected packages: skyvern.
What version fixes CVE-2025-49619?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is skyvern affected?
Yes, skyvern is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-49619?
CVE-2025-49619 has a CVSS v3.1 base score of 8.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
What CWE is associated with CVE-2025-49619?
CVE-2025-49619 is classified under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine (The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.).
How can I check PyPI dependencies for CVE-2025-49619?
Run the dependency tree command: 'pip show skyvern'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h92g-3xc3-ww2r",
  "modified" : "2025-06-17T21:41:21Z",
  "published" : "2025-06-07T15:30:18Z",
  "aliases" : [ "CVE-2025-49619" ],
  "summary" : "Skyvern has a Jinja runtime leak",
  "details" : "Skyvern through 0.2.0 has a Jinja runtime leak in sdk/workflow/models/block.py.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "skyvern"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-49619"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Skyvern-AI/skyvern/commit/db856cd8433a204c8b45979c70a4da1e119d949d"
  }, {
    "type" : "WEB",
    "url" : "https://cristibtz.blog/posts/CVE-2025-49619"
  }, {
    "type" : "WEB",
    "url" : "https://cristibtz.github.io/posts/CVE-2025-49619"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Skyvern-AI/skyvern"
  }, {
    "type" : "WEB",
    "url" : "https://www.exploit-db.com/exploits/52335"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1336" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-09T13:04:44Z",
    "nvd_published_at" : "2025-06-07T14:15:21Z"
  }
}