CVE-2026-104974: Access Control Flaw (CVSS 8.1)

Description

Plane is an open-source project management tool. Prior to 1.4.0, a user whose account has been deactivated by setting is_active=False can still log in with existing credentials. Successful authentication silently changes is_active back to True, reactivating the account without notifying the administrator. This issue is fixed in 1.4.0.

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CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0050

Probability of exploitation

0.41%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-284 CWE-284

References

Other References

https://github.com/makeplane/plane/commit/1e8f3630c7697129b61eb57f2453f0bf09224920 https://github.com/makeplane/plane/commit/6c9dbb50434d16ea00a00d1574723dfd0c3d2446 https://github.com/makeplane/plane/pull/9290 https://github.com/makeplane/plane/pull/9304 https://github.com/makeplane/plane/releases/tag/v1.4.0 https://github.com/makeplane/plane/security/advisories/GHSA-rmmf-rj2q-3rrg https://github.com/makeplane/plane/security/advisories/GHSA-rmmf-rj2q-3rrg

Frequently Asked Questions

What is CVE-2026-104974? +

Plane is an open-source project management tool. Prior to 1.4.0, a user whose account has been deactivated by setting is_active=False can still log in with existing credentials. Successful authentication silently changes is_active back to True, reactivating the account without notifying the administrator. This issue is fixed in 1.4.0. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-104974? +

CVE-2026-104974 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0050, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-104974? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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