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CVE-2026-53777

8.1 · HIGH

Perry before 0.5.1159 contains a path traversal vulnerability that allows a malicious build server to write arbitrary content to any location writable by the running process by supplying unsanitize…

Published Jun 11, 2026CWE-22EPSS 0.50%

Overview

CVE-2026-53777 is a high-severity vulnerability. It was published on June 11, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Perry before 0.5.1159 contains a path traversal vulnerability that allows a malicious build server to write arbitrary content to any location writable by the running process by supplying unsanitized path components in the artifact_name field of ArtifactReady WebSocket messages. Attackers controlling the server URL can deliver traversal payloads through the artifact_name or download_path fields, causing the client to overwrite sensitive files or expose arbitrary local files to an attacker-accessible location.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/PerryTS/perry/commit/95e1043df8081f67038bffce847dd9ddb3dae046GitHubgithub.com/PerryTS/perry/pull/4989GitHubgithub.com/PerryTS/perry/releases/tag/v0.5.1159GitHubgithub.com/PerryTS/perry/security/advisories/GHSA-x55v-q459-68chRefwww.vulncheck.com/advisories/perry-path-traversal-via-artifactready-websocketGitHubgithub.com/PerryTS/perry/security/advisories/GHSA-x55v-q459-68ch

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53777?

CVE-2026-53777 is a high-severity vulnerability. It was published on June 11, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-53777?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-53777?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-53777?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53777 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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