CVE-2026-4963

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.57% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 45.1% of scored records. A rank, not a probability.

NVD base score

2.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-27 17:05Z5 MO AGO

Last updated

2026-03-31 13:32Z5 MO AGO

Reserved

2026-03-27

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

12eb3f9c02af20f598bd64946faa23e0370293ceb15cc45e3c119d39675a799d

• vuldb.comVDB-353840 | huggingface smolagents Incomplete Fix CVE-2025-9959 local_python_executor.py evaluate_with code injectionhttps://vuldb.com/?id.353840vdb-entrytechnical-description
• vuldb.comVDB-353840 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/?ctiid.353840signaturepermissions-required
• vuldb.comSubmit #777623 | HuggingFace smolagents 1.25.0.dev0 CWE-693https://vuldb.com/?submit.777623third-party-advisory
• vuldb.comSubmit #777643 | HuggingFace smolagents 1.25.0.dev0 CWE-693 (Duplicate)https://vuldb.com/?submit.777643third-party-advisory
• vuldb.comSubmit #777644 | HuggingFace smolagents 1.25.0.dev0 CWE-693 (Duplicate)https://vuldb.com/?submit.777644third-party-advisory
• gist.github.comhttps://gist.github.com/YLChen-007/7146f45960f79bc1e2976fed526e0a9brelated
• gist.github.comhttps://gist.github.com/YLChen-007/35b7d46e892266a0ed6dbe57802858beexploit