CVE-2026-72742

DSPy 3.3.0b1 contains a file exfiltration vulnerability in the Image and Audio output field adapters that allows attackers with influence over language model outputs to read arbitrary local files by injecting a filesystem path into the url field of a parsed Image or Audio typed output. The JSONAdapter and ChatAdapter parse untrusted language model completions through parse_value into TypeAdapter validation, which triggers encode_image or encode_audio to read and base64-encode any local file path via the os.path.isfile branch in image.py and audio.py, subsequently embedding the file contents into outgoing prompt messages sent to the attacker-controlled model endpoint.

CVSS v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/stanfordnlp/dspy
https://github.com/stanfordnlp/dspy/commit/c69136b29aca4c00ca6da7667f7b80783188980e
https://github.com/stanfordnlp/dspy/issues/10067
https://www.vulncheck.com/advisories/dspy-0b1-local-file-read-via-image-audio-output-field-parsing

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-11 19:18

Updated : 2026-08-12 17:17

NVD link : CVE-2026-72742

Mitre link : CVE-2026-72742

CVE.ORG link : CVE-2026-72742

JSON object : View

Products Affected

No product.

CWE

CWE-73

External Control of File Name or Path

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