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CVE-2026-81684 jahlives CVE debrief

The CVE-2026-81684 vulnerability affects the openssl_encrypt package (pip package openssl-encrypt) in versions <= 1.4.8. The desktop GUI passes the steganography password to the CLI child process on the command line via the --stego-password argument, allowing any local user to read the steganography password from /proc/<pid>/cmdline for the lifetime of the subprocess. To address this vulnerability, users should review their system configurations, ensure that only authorized users have access to sensitive information, and apply the fixed version 1.4.9 or later. Additionally, security teams should consider compensating controls for exposed systems while remediation is scheduled and verified. Operators and platform administrators should prioritize patching affected systems and monitor for potential exploitation attempts. This vulnerability has a CVSS score of 6.9 and a severity of MEDIUM. The CVE record was published on 2026-08-27T17:20:57.957Z and has not been modified since then. The NVD entry is currently Analyzed.

Vendor
jahlives
Product
openssl_encrypt
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-27
Original CVE updated
2026-09-03
Advisory published
2026-08-27
Advisory updated
2026-09-03

Who should care

Users of the openssl_encrypt package, especially those using versions <= 1.4.8, should be aware of this vulnerability and take necessary actions to protect their systems. This includes reviewing system logs for suspicious activities, restricting access to sensitive information, and applying the fixed version 1.4.9 or later. Additionally, security teams should consider compensating controls for exposed systems while remediation is scheduled and verified. Operators and platform administrators should prioritize patching affected systems and monitor for potential exploitation attempts.

Technical summary

The openssl_encrypt package (pip package openssl-encrypt) versions <= 1.4.8 has a vulnerability where the desktop GUI passes the steganography password to the CLI child process on the command line via the --stego-password argument. This allows any local user to read the steganography password from /proc/<pid>/cmdline for the lifetime of the subprocess. The vulnerability is fixed in version 1.4.9. Users should review their system configurations and ensure that only authorized users have access to sensitive information.

Defensive priority

Local users may exploit this vulnerability to obtain sensitive steganography passwords.

Recommended defensive actions

  • Inventory and check openssl_encrypt package versions, especially versions <= 1.4.8.
  • Apply the fixed version 1.4.9 or later.
  • Monitor system logs for suspicious activities related to the openssl_encrypt package.
  • Restrict access to sensitive information and consider compensating controls.
  • Review system configurations to ensure that only authorized users have access to sensitive information.
  • Prioritize patching affected systems and monitor for potential exploitation attempts.
  • Consider compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

The openssl_encrypt package (pip package openssl-encrypt) versions <= 1.4.8 passes the steganography password to the CLI child process on the command line via the --stego-password argument. This allows any local user to read the steganography password from /proc/<pid>/cmdline for the lifetime of the subprocess. The vulnerability is fixed in version 1.4.9. To verify, review system logs for suspicious activities related to the openssl_encrypt package, especially on systems where local users may have access to /proc/<pid>/cmdline. Additionally, consider compensating controls for exposed systems while remediation is scheduled and verified.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-81684 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-81684

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-81684 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-81684

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-rx2c-m92f-qv6p

    [email protected] - Vendor Advisory

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-information-disclosure-via-command-line

    [email protected] - Third Party Advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.