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.
Metrics
Affected Vendors & Products
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History
Wed, 12 Aug 2026 18:30:00 +0000
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ssvc
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Tue, 11 Aug 2026 19:00:00 +0000
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| Description | 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. | |
| Title | DSPy 3.3.0b1 Local File Read via Image/Audio Output Field Parsing | |
| Weaknesses | CWE-73 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-12T16:58:19.991Z
Reserved: 2026-08-10T13:53:42.482Z
Link: CVE-2026-72742
Updated: 2026-08-12T16:05:25.647Z
Status : Received
Published: 2026-08-11T19:18:49.130
Modified: 2026-08-12T17:17:31.593
Link: CVE-2026-72742
No data.
OpenCVE Enrichment
Updated: 2026-08-12T20:30:04Z