How severe is CVE-2026-30242?

CVE-2026-30242 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-30242 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30242?

CVE-2026-30242 affects Plane. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30242?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-30242 have an EU (EUVD) identifier?

Yes. CVE-2026-30242 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10082.

When was CVE-2026-30242 published?

CVE-2026-30242 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-30242

CVE-2026-30242 is a high-severity vulnerability in Plane with a CVSS 3.x base score of 8.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 8.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10082
Weakness: CWE-918
Affected product: Plane
Published: 2026-03-06
Last modified: 2026-06-17

Description

Plane is an an open-source project management tool. Prior to version 1.2.3, the webhook URL validation in plane/app/serializers/webhook.py only checks ip.is_loopback, allowing attackers with workspace ADMIN role to create webhooks pointing to private/internal network addresses (10.x.x.x, 172.16.x.x, 192.168.x.x, 169.254.169.254, etc.). When webhook events fire, the server makes requests to these internal addresses and stores the response — enabling SSRF with full response read-back. This issue has been patched in version 1.2.3.

Frequently asked questions

What is CVE-2026-30242?: Plane is an an open-source project management tool. Prior to version 1.2.3, the webhook URL validation in plane/app/serializers/webhook.py only checks ip.is_loopback, allowing attackers with workspace ADMIN role to create webhooks pointing to private/internal network addresses (10.x.x.x, 172.16.x.x, 192.168.x.x, 169.254.169.254, etc.). When webhook events fire, the server makes requests to these internal addresses and stores the response — enabling SSRF with full response read-back. This issue has been patched in version 1.2.3.
How severe is CVE-2026-30242?: CVE-2026-30242 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-30242 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30242?: CVE-2026-30242 affects Plane. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30242?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-30242 have an EU (EUVD) identifier?: Yes. CVE-2026-30242 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10082.
When was CVE-2026-30242 published?: CVE-2026-30242 was published on 2026-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*

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