How severe is CVE-2024-24817?

CVE-2024-24817 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-24817 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-24817?

CVE-2024-24817 affects Discourse Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-24817?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-24817 have an EU (EUVD) identifier?

Yes. CVE-2024-24817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-22187.

When was CVE-2024-24817 published?

CVE-2024-24817 was published on 2024-02-22 and last updated on 2026-06-17.

CVE-2024-24817

CVE-2024-24817 is a medium-severity vulnerability in Discourse Calendar with a CVSS 3.x base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-22187
Weakness: CWE-200
Affected product: Discourse Calendar
Published: 2024-02-22
Last modified: 2026-06-17

Description

Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on the open-source discussion platform Discourse. Prior to version 0.4, event invitees created in topics in private categories or PMs (private messages) can be retrieved by anyone, even if they're not logged in. This problem is resolved in version 0.4 of the discourse-calendar plugin. While no known workaround is available, putting the site behind `login_required` will disallow this endpoint to be used by anonymous users, but logged in users can still get the list of invitees in the private topics.

Frequently asked questions

What is CVE-2024-24817?: Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on the open-source discussion platform Discourse. Prior to version 0.4, event invitees created in topics in private categories or PMs (private messages) can be retrieved by anyone, even if they're not logged in. This problem is resolved in version 0.4 of the discourse-calendar plugin. While no known workaround is available, putting the site behind `login_required` will disallow this endpoint to be used by anonymous users, but logged in users can still get the list of invitees in the private topics.
How severe is CVE-2024-24817?: CVE-2024-24817 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-24817 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-24817?: CVE-2024-24817 affects Discourse Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-24817?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-24817 have an EU (EUVD) identifier?: Yes. CVE-2024-24817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-22187.
When was CVE-2024-24817 published?: CVE-2024-24817 was published on 2024-02-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:discourse:calendar:*:*:*:*:*:*:*:*

More vulnerabilities in Discourse Calendar

CVE-2024-26145 — Medium (CVSS 6.5): Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on Discourse. Uninvited…
CVE-2024-45303 — Medium (CVSS 6.1): Discourse Calendar plugin adds the ability to create a dynamic calendar in the first post of a topic to Discourse.…
CVE-2022-41913 — Medium (CVSS 4.3): Discourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar…

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