Skyvern up to 0.1.85 Jinja block.py special elements used in a template engine

Summaryinfo

A vulnerability was found in Skyvern up to 0.1.85. It has been rated as critical. Impacted is an unknown function of the file sdk/workflow/models/block.py of the component Jinja Handler. The manipulation leads to improper neutralization of special elements used in a template engine. This vulnerability is documented as CVE-2025-49619. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Skyvern up to 0.1.85. This issue affects an unknown function of the file sdk/workflow/models/block.py of the component Jinja Handler. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. Using CWE to declare the problem leads to CWE-1336. 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Skyvern through 0.1.85 has a Jinja runtime leak in sdk/workflow/models/block.py.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-49619 since 06/07/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1221 according to MITRE ATT&CK.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

Applying the patch db856cd8433a204c8b45979c70a4da1e119d949d is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Exploit-DB (52335) and EUVD (EUVD-2025-17375). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Skyvern

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4
• 0.1.5
• 0.1.6
• 0.1.7
• 0.1.8
• 0.1.9
• 0.1.10
• 0.1.11
• 0.1.12
• 0.1.13
• 0.1.14
• 0.1.15
• 0.1.16
• 0.1.17
• 0.1.18
• 0.1.19
• 0.1.20
• 0.1.21
• 0.1.22
• 0.1.23
• 0.1.24
• 0.1.25
• 0.1.26
• 0.1.27
• 0.1.28
• 0.1.29
• 0.1.30
• 0.1.31
• 0.1.32
• 0.1.33
• 0.1.34
• 0.1.35
• 0.1.36
• 0.1.37
• 0.1.38
• 0.1.39
• 0.1.40
• 0.1.41
• 0.1.42
• 0.1.43
• 0.1.44
• 0.1.45
• 0.1.46
• 0.1.47
• 0.1.48
• 0.1.49
• 0.1.50
• 0.1.51
• 0.1.52
• 0.1.53
• 0.1.54
• 0.1.55
• 0.1.56
• 0.1.57
• 0.1.58
• 0.1.59
• 0.1.60
• 0.1.61
• 0.1.62
• 0.1.63
• 0.1.64
• 0.1.65
• 0.1.66
• 0.1.67
• 0.1.68
• 0.1.69
• 0.1.70
• 0.1.71
• 0.1.72
• 0.1.73
• 0.1.74
• 0.1.75
• 0.1.76
• 0.1.77
• 0.1.78
• 0.1.79
• 0.1.80
• 0.1.81
• 0.1.82
• 0.1.83
• 0.1.84
• 0.1.85

License

• open-source

CPE 2.3info

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CPE 2.2info

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