CVE-2026-81701Network attack vectorHinoki check available

Arbitrary code execution via unsigned plugin trust

Published Aug 27, 2026 · Updated Aug 27, 2026

Plugin signature bypass in jahlives OpenSSL Encrypt before 1.4.9 allows remote attackers to execute code via an unsigned plugin. The _is_builtin_plugin check treats top-level plugins and unknown subdirectories as trusted, skipping signature, AST, and hash-pin checks before exec() loads their code. Placement in a documented plugin directory is sufficient; execution occurs in the CLI process, exposing its passwords, keys, plaintext, and process privileges.

CVSS severity9.3
Critical
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Plugin signature bypass in jahlives OpenSSL Encrypt before 1.4.9 allows remote attackers to execute code via an unsigned plugin. The _is_builtin_plugin check treats top-level plugins and unknown subdirectories as trusted, skipping signature, AST, and hash-pin checks before exec() loads their code. Placement in a documented plugin directory is sufficient; execution occurs in the CLI process, exposing its passwords, keys, plaintext, and process privileges.

The record

CVE
CVE-2026-81701
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
jahlives
Product
OpenSSL Encrypt
Classifications
CWE-347, T1129
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jahlives · OpenSSL Encryptversion=0 <1.4.9

Published CVSS scores

9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1129Shared Modules

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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