CVE-2026-19243

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• 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

1.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 73.8% 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:L/UI:N/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

Deferred. NVD last modified this record on 2026-08-12.

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

2026-08-07 19:30Z27 DAYS AGO

Last updated

2026-08-11 01:10Z24 DAYS AGO

Reserved

2026-08-07

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

3c95d9ad7c345d44230e22a71fbe00d9cbcde0930160624dfba1b39ff0e2c2a3

• vuldb.comVDB-386997 | HKUDS nanobot Shell Allowlist shell.py ExecTool._spawn os command injectionhttps://vuldb.com/vuln/386997vdb-entrytechnical-description
• vuldb.comVDB-386997 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/386997/ctisignaturepermissions-required
• vuldb.comCVE-2026-19243 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-19243third-party-advisory
• vuldb.comSubmit #865112 | HKUDS nanobot 0.2.1 OS Command Injection via Allowlist Bypass (CWE-78)https://vuldb.com/submit/865112third-party-advisory
• vuldb.comSubmit #865114 | HKUDS nanobot 0.2.1 Command Injection via Comment-Tail Allowlist Bypass (CWE-88) (Duplicate)https://vuldb.com/submit/865114third-party-advisory
• vuldb.comSubmit #865115 | HKUDS nanobot 0.2.1 Allowlist Bypass via Wrapper Prefix (CWE-184) (Duplicate)https://vuldb.com/submit/865115third-party-advisory
• vuldb.comSubmit #865119 | HKUDS nanobot 0.2.1 Allowlist Bypass Leading to Command Execution (CWE-184) (Duplicate)https://vuldb.com/submit/865119third-party-advisory
• vuldb.comSubmit #865121 | HKUDS nanobot 0.2.1 Command Injection via Shell-Chain Allowlist Bypass (CWE-88) (Duplicate)https://vuldb.com/submit/865121third-party-advisory
• github.comhttps://github.com/HKUDS/nanobot/issues/4521issue-tracking
• gist.github.comhttps://gist.github.com/YLChen-007/8fcbf8e49e7be568e1a92e9e0414fdbaexploit
• github.comhttps://github.com/HKUDS/nanobot/pull/4562issue-trackingpatch
• github.comhttps://github.com/HKUDS/nanobot/releases/tag/v0.3.0patch
• github.comhttps://github.com/HKUDS/nanobot/product