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CVE-2026-104977

7.7 · HIGH

Plane is an open-source project management tool.

Published Oct 5, 2026CWE-918EPSS 0.30%

Overview

CVE-2026-104977 is a high-severity vulnerability. It was published on October 5, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Plane is an open-source project management tool. Prior to 1.4.0, the fix for CVE-2026-27706 and GHSA-jcc6-f9v6-f7jw, an SSRF in work-item link unfurling shipped in v1.2.2, remains incomplete in the v1.3.1 GA release. Any authenticated project member can make the server fetch attacker-selected internal targets, including cloud metadata at 169.254.169.254, and read the response body returned as the link title or favicon. Complete hardening exists on main in PR 9163 but was not included in an earlier released tag. This issue is fixed in 1.4.0.

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/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615GitHubgithub.com/makeplane/plane/pull/9163GitHubgithub.com/makeplane/plane/releases/tag/v1.4.0GitHubgithub.com/makeplane/plane/security/advisories/GHSA-hhj8-7hv6-m74rGitHubgithub.com/makeplane/plane/security/advisories/GHSA-hhj8-7hv6-m74r

How CyberStrike helps

Frequently asked questions

What is CVE-2026-104977?

CVE-2026-104977 is a high-severity vulnerability. It was published on October 5, 2026 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2026-104977?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-104977?

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-2026-104977?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-104977 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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