How severe is CVE-2024-26145?

CVE-2024-26145 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-26145 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26145?

CVE-2024-26145 affects Discourse Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-26145?

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

Does CVE-2024-26145 have an EU (EUVD) identifier?

Yes. CVE-2024-26145 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23428.

When was CVE-2024-26145 published?

CVE-2024-26145 was published on 2024-02-21 and last updated on 2026-06-17.

CVE-2024-26145

CVE-2024-26145 is a medium-severity vulnerability in Discourse Calendar with a CVSS 3.x base score of 6.5. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23428
Weakness: CWE-863
Affected product: Discourse Calendar
Published: 2024-02-21
Last modified: 2026-06-17

Description

Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on Discourse. Uninvited users are able to gain access to private events by crafting a request to update their attendance. This problem is resolved in commit dfc4fa15f340189f177a1d1ab2cc94ffed3c1190. As a workaround, one may use post visibility to limit access.

Frequently asked questions

What is CVE-2024-26145?: Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on Discourse. Uninvited users are able to gain access to private events by crafting a request to update their attendance. This problem is resolved in commit dfc4fa15f340189f177a1d1ab2cc94ffed3c1190. As a workaround, one may use post visibility to limit access.
How severe is CVE-2024-26145?: CVE-2024-26145 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-26145 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26145?: CVE-2024-26145 affects Discourse Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-26145?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-26145 have an EU (EUVD) identifier?: Yes. CVE-2024-26145 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23428.
When was CVE-2024-26145 published?: CVE-2024-26145 was published on 2024-02-21 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Discourse Calendar

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-2024-24817 — Medium (CVSS 4.3): Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on the open-source…
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…

All CVEs affecting Discourse Calendar →

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