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CVE-2026-81690— verify-usb before 1.4.9 Symlink Directory Traversal Code Execution

Quick assessment

Affected
jahlives openssl_encrypt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tobi OpenSSL Encrypt是Tobi个人开发者的一款基于 Python 的文件加密工具。 Tobi OpenSSL Encrypt 1.4.9之前版本存在后置链接漏洞，该漏洞源于verify-usb v2 added-file allowlist扫描存在符号链接跟随缺陷，可能允许具有物理访问权限的攻击者通过替换目录为符号链接并植入恶意__pycache__/*.pyc文件，导致执行代码。

CVSS 7.3 · High EPSS 0.71% · P52

Affected Version Matrix 2

VendorProduct Version RangeStatus
jahlives openssl_encrypt < 1.4.9 affected
1.4.9 unaffected
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I. Basic Information for CVE-2026-81690

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
verify-usb before 1.4.9 Symlink Directory Traversal Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
openssl-encrypt (pip package) before 1.4.9 contains a symlink-following flaw in its verify-usb v2 added-file allowlist scan. The scan enumerated the drive with rglob(), which in CPython does not descend into symlinked directories and treats the symlink as an ordinary directory, while O_NOFOLLOW on the hash side binds only the final path component. An evil-maid attacker with physical access to the removable drive could replace a tool-tree directory with a symlink to a copy containing byte-identical files plus a planted __pycache__/*.pyc file (which CPython loads in preference to recompiling the clean .py). The planted file is never enumerated, added_files stays 0, and verify-usb reports PASSED, resulting in code execution when the victim runs the portable install. Fixed in 1.4.9 (affects both 1.4.x and 1.5.x lines).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Tobi OpenSSL Encrypt 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tobi OpenSSL Encrypt是Tobi个人开发者的一款基于 Python 的文件加密工具。 Tobi OpenSSL Encrypt 1.4.9之前版本存在后置链接漏洞，该漏洞源于verify-usb v2 added-file allowlist扫描存在符号链接跟随缺陷，可能允许具有物理访问权限的攻击者通过替换目录为符号链接并植入恶意__pycache__/*.pyc文件，导致执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jahlives openssl_encrypt 0 ~ 1.4.9 -

II. Public POCs for CVE-2026-81690

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III. Intelligence Information for CVE-2026-81690

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Vendor Advisories for CVE-2026-81690 (2)

Same Patch Batch · jahlives · 2026-08-27 · 36 CVEs total

CVE-2026-81707 9.8 CRITICAL openssl_encrypt before 1.4.9 ANSI Escape Injection via Identity Email
CVE-2026-81701 9.8 CRITICAL openssl_encrypt before 1.4.9 Arbitrary Code Execution via unsigned plugin
CVE-2026-81700 9.8 CRITICAL openssl_encrypt before 1.4.9 GPG Signature Verification Bypass
CVE-2026-81702 9.8 CRITICAL openssl_encrypt before 1.4.9 Key Substitution via Identity Load
CVE-2026-81683 8.4 HIGH openssl_encrypt before 1.4.9 Plaintext Private Key Storage
CVE-2026-81719 7.8 HIGH openssl_encrypt before 1.4.9 Remote Code Execution via Plugin
CVE-2026-81721 7.5 HIGH openssl_encrypt before 1.4.9 Denial of Service via KDF
CVE-2026-81698 7.5 HIGH openssl_encrypt before 1.4.9 Shell Injection via info command
CVE-2026-81704 7.5 HIGH openssl_encrypt before 1.4.9 Weak Key Derivation via D-Bus
CVE-2026-81693 7.5 HIGH openssl_encrypt before 1.4.9 Denial of Service via QR total field
CVE-2026-81705 7.5 HIGH openssl-encrypt before 1.4.9 Password Cleartext Leak via Debug
CVE-2026-81689 7.5 HIGH openssl_encrypt before 1.4.9 Weak Pepper Key Derivation
CVE-2026-81699 7.5 HIGH openssl_encrypt before 1.4.9 Denial of Service via unbounded KDF cost
CVE-2026-81692 7.5 HIGH openssl_encrypt before 1.4.9 Denial of Service via STREAMINFO
CVE-2026-81691 7.5 HIGH openssl_encrypt before 1.4.9 Credential Leakage via Unvalidated Server URLs
CVE-2026-81688 7.5 HIGH openssl_encrypt before 1.4.9 Plaintext Confirmation Oracle via SHA-256
CVE-2026-81718 7.5 HIGH openssl_encrypt before 1.4.9 Weak Cryptographic Parameters
CVE-2026-81714 7.0 HIGH openssl_encrypt before 1.4.9 Plugin Signing Trust Anchor Enrollment Bypass
CVE-2026-81706 6.8 MEDIUM openssl_encrypt before 1.4.9 Key Substitution via Identity Shadowing
CVE-2026-81684 6.2 MEDIUM openssl_encrypt before 1.4.9 Information Disclosure via Command Line

Showing top 20 of 36 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: openssl_encrypt
Same vendor: jahlives
Same weakness: CWE-59

V. Comments for CVE-2026-81690

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