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CVE Vulnerability Details :
CVE-2026-9366
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-24 May, 2026 | 08:15
Updated At-24 May, 2026 | 08:15
Rejected At-
▼CVE Numbering Authority (CNA)
NousResearch hermes-agent prompt_builder.py _scan_context_content injection

A vulnerability was found in NousResearch hermes-agent 2026.4.23. The impacted element is the function _scan_context_content of the file agent/prompt_builder.py. The manipulation results in injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected Products
Vendor
NousResearch
Product
hermes-agent
CPEs
  • cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*
Versions
Affected
  • 2026.4.23
Problem Types
TypeCWE IDDescription
CWECWE-74Injection
CWECWE-707Improper Neutralization
Type: CWE
CWE ID: CWE-74
Description: Injection
Type: CWE
CWE ID: CWE-707
Description: Improper Neutralization
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.07.3HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.07.5N/A
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Version: 3.0
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Version: 2.0
Base score: 7.5
Base severity: N/A
Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Eric-i (VulDB User)
coordinator
VulDB CNA Team
Timeline
EventDate
Advisory disclosed2026-05-23 00:00:00
VulDB entry created2026-05-23 02:00:00
VulDB entry last update2026-05-23 12:38:23
Event: Advisory disclosed
Date: 2026-05-23 00:00:00
Event: VulDB entry created
Date: 2026-05-23 02:00:00
Event: VulDB entry last update
Date: 2026-05-23 12:38:23
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/365329
vdb-entry
technical-description
https://vuldb.com/vuln/365329/cti
signature
permissions-required
https://vuldb.com/submit/812227
third-party-advisory
https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75cc
exploit
Hyperlink: https://vuldb.com/vuln/365329
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/vuln/365329/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/812227
Resource:
third-party-advisory
Hyperlink: https://gist.github.com/YLChen-007/581fd92de5548fbaacb2092e848a75cc
Resource:
exploit
Details not found