CVE Intelligence
Low exploit reference

CVE-2026-14617 — NousResearch hermes-agent Streaming Reasoning Tag Filter stream_consumer.py GatewayStreamConsumer._filter_and_accumulate case sensitivity

A security vulnerability has been detected in NousResearch hermes-agent up to 2026.4.30. Affected is the function GatewayStreamConsumer._filter_and_accumulate of the file gateway/stream_consumer.py of the component Streaming Reasoning Tag Filter. The manipulation leads to improper handling of case sensitivity. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. The project decided to not implement a dedicated fix: "[T]he analysis and the fix are both sound. It just lands below the bar for the maintenance cost of a duplicated scrub path."

Published Jul 3, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
—
No EPSS score.
Affects
NousResearch
Hermes-agent
CVSS base
3.1
Low · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Proof of concept
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (NousResearch Hermes-agent).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
NousResearch Hermes-agent version 2026.4.15version 2026.4.30version 2026.4.29version 2026.4.28version 2026.4.27version 2026.4.26version 2026.4.25version 2026.4.24
and 23 more version 2026.4.23version 2026.4.22version 2026.4.21version 2026.4.20version 2026.4.19version 2026.4.18version 2026.4.17version 2026.4.16version 2026.4.0version 2026.4.14version 2026.4.13version 2026.4.12version 2026.4.11version 2026.4.10version 2026.4.9version 2026.4.8version 2026.4.7version 2026.4.6version 2026.4.5version 2026.4.4version 2026.4.3version 2026.4.2version 2026.4.1
Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
2.3 CVSS 4.0 Low — — VulDB via CVE Program (cve.org) e CISA ADP
1.3 CVSS 4.0 Low — — cna@vuldb.com via NIST National Vulnerability Database
3.1 CVSS 3.1 Low 1.6 1.4 cna@vuldb.com via NIST National Vulnerability Database
3.1 CVSS 3.1 Low — — VulDB via CVE Program (cve.org) e CISA ADP
3.1 CVSS 3.0 Low — — VulDB via CVE Program (cve.org) e CISA ADP
2.1 CVSS 2.0 Low 3.9 2.9 cna@vuldb.com via NIST National Vulnerability Database
2.1 CVSS 2.0 Low — — VulDB via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-178

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · nousresearch/hermes-agent
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 15, 2026
  • CVSS changed · 3.1
    Oct 15, 2026 · NIST National Vulnerability Database
  • Source status changed · → Deferred
    Oct 15, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 15, 2026 · NIST National Vulnerability Database
  • CVE published
    Jul 3, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

Elsewhere on this site

NousResearch
every CVE for this vendor
CWE-178
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-71963 Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection Sep 3, 2026
  • CVE-2026-85105 NousResearch hermes-agent Session Management s71.py _sess_nowait authorization Sep 3, 2026
  • CVE-2026-85106 NousResearch hermes-agent Link Title Fetch index.tsx fetchLinkTitle server-side request forgery Sep 3, 2026
  • CVE-2026-85107 NousResearch hermes-agent Electron Main Process main.ts resourceBufferFromUrl allocation of resources Sep 3, 2026
  • CVE-2026-84288 NousResearch hermes-agent ACP Prompt Workflow session.py HermesACPAgent.prompt denial of service Sep 1, 2026
  • CVE-2026-84289 NousResearch hermes-agent MCP Tool mcp_tool.py list_tools memory allocation Sep 1, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No FIRST EPSS score.
  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-14617 is "NousResearch hermes-agent Streaming Reasoning Tag Filter stream_consumer.py GatewayStreamConsumer._filter_and_accumulate case sensitivity", rated Low. It affects Hermes-agent (NousResearch); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 3.1 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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