CVE-2026-34977
Published: 06 April 2026
Description
Aperi'Solve is an open-source steganalysis web platform. Prior to 3.2.1, when uploading a JPEG, a user can specify an optional password to accompany the JPEG. This password is then directly passed into an expect command, which is then subsequently passed…
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into a bash -c command, without any form of sanitization or validation. An unauthenticated attacker can achieve root-level RCE inside the worker container with a single HTTP request, enabling full read/write access to all user-uploaded images, analysis results, and plaintext steganography passwords stored on disk. Because the container shares a Docker network with PostgreSQL and Redis (no authentication on either), the attacker can pivot to dump the entire database or manipulate the job queue to poison results for other users. If Docker socket mounting or host volume mounts are present, this could escalate to full host compromise. This would also include defacement of the website itself. This vulnerability is fixed in 3.2.1.
Mitigating Controls (NIST 800-53 r5)AI
Requires validation and sanitization of the user-supplied password before passing it to expect and bash -c commands, directly preventing command injection exploits.
Mandates timely flaw remediation through patching, such as upgrading Aperi'Solve to version 3.2.1 which fixes the unsanitized input vulnerability.
Enforces least privilege in the worker container to limit the scope of root-level RCE, reducing access to files, database pivoting, and potential host escalation.
Security SummaryAI
CVE-2026-34977 is a command injection vulnerability (CWE-78) affecting Aperi'Solve, an open-source steganalysis web platform. In versions prior to 3.2.1, the platform allows users to upload JPEG files with an optional password, which is passed directly into an expect command and subsequently into a bash -c command without sanitization or validation. This flaw enables arbitrary command execution at the root level within the worker container.
An unauthenticated attacker can exploit this vulnerability with a single HTTP request to achieve root-level remote code execution (RCE) inside the worker container. This grants full read/write access to all user-uploaded images, analysis results, and plaintext steganography passwords stored on disk. As the container shares a Docker network with unauthenticated PostgreSQL and Redis instances, attackers can pivot to dump the entire database or manipulate the job queue to poison results for other users. If the deployment includes Docker socket mounting or host volume mounts, exploitation could escalate to full host compromise, including website defacement.
The vulnerability is addressed in Aperi'Solve version 3.2.1, as detailed in the project's security advisory (GHSA-8r22-62p7-9jrp), release notes, associated pull request (#195), and fixing commit (0193ca4a7d8ae9d6ba6cde82d37a6f94953463b4). Security practitioners should upgrade to 3.2.1 or later to mitigate the risk.
Details
- CWE(s)
Affected Products
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The vulnerability is an unauthenticated command injection in a public-facing web application (T1190), enabling arbitrary Unix shell command execution (T1059.004) at root level in the container.