CVE-2026-4963 | huggingface smolagents 1.25.0.dev0 Incomplete Fix CVE-2025-9959 local_python_executor.py evaluate_augassign/evaluate_call/evaluate_with code injection

VDB-353840 · CVE-2026-4963 · GCVE-100-353840 HUGGINGFACE SMOLAGENTS 1.25.0.DEV0 INCOMPLETE FIX CVE-2025-9959 LOCAL_PYTHON_EXECUTOR.PY EVALUATE_AUGASSIGN/EVALUATE_CALL/EVALUATE_WITH CODE INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.7 $0-$5k 2.10 Summaryinfo A vulnerability was found in huggingface smolagents 1.25.0.dev0 and classified as critical. This vulnerability affects the function evaluate_augassign/evaluate_call/evaluate_with of the file src/smolagents/local_python_executor.py of the component Incomplete Fix CVE-2025-9959. Such manipulation leads to code injection. This vulnerability is referenced as CVE-2026-4963. It is possible to launch the attack remotely. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in huggingface smolagents 1.25.0.dev0 and classified as critical. Affected by this issue is the function evaluate_augassign/evaluate_call/evaluate_with of the file src/smolagents/local_python_executor.py of the component Incomplete Fix CVE-2025-9959. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-4963. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059. The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor huggingface Name smolagents Version 1.25.0.dev0 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 5.7 VulDB Base Score: 6.3 VulDB Temp Score: 5.7 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Code injection CWE: CWE-94 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/27/2026 Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Advisory: gist.github.com Status: Not defined CVE: CVE-2026-4963 (🔒) GCVE (CVE): GCVE-0-2026-4963 GCVE (VulDB): GCVE-100-353840 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/27/2026 09:23 Changes: 03/27/2026 09:23 (57) Complete: 🔍 Submitter: Eric-z Cache ID: 99:5DB:101 Submitinfo Accepted Submit #777623: HuggingFace smolagents 1.25.0.dev0 CWE-693 (by Eric-z) Duplicate Submit #XXXXXX: Xxxxxxxxxxx Xxxxxxxxxx X.xx.x.xxxx Xxx-xxx (by Eric-z) Submit #XXXXXX: Xxxxxxxxxxx Xxxxxxxxxx X.xx.x.xxxx Xxx-xxx (by Eric-z) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸