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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.

openssl-encrypt（pip 包）在 1.4.9 之前版本中存在一个符号链接跟随（symlink-following）缺陷，该缺陷位于其 verify-usb v2 的“新增文件”允许列表扫描中。该扫描使用 枚举驱动器；在 CPython 中， 不会进入符号链接目录，而是将该符号链接视为普通目录；而在哈希侧， 标志仅绑定路径的最终组件。 一位拥有对可移动驱动器物理访问权限的“恶女仆”（evil-maid）攻击者，可以将工具树中的某个目录替换为一个指向副本的符号链接，该副本包含字节级相同的文件，并额外植入一

CVSS 7.3 · High

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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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

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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