VulnerabilityAnalyzed

CVE-2024-21658

This allows a malicious actor to cause a Discourse instance to use excessive bandwidth and disk space.

MEDIUM 4.3EPSS 0.36%

Does this matter?

Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.

Description

discourse-calendar is a discourse plugin which adds the ability to create a dynamic calendar in the first post of a topic. The limit on region value length is too generous. This allows a malicious actor to cause a Discourse instance to use excessive bandwidth and disk space. This issue has been patched in main the main branch. There are no workarounds for this vulnerability. Please upgrade as soon as possible.

CVSS 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS: 0.36% probability · 30th percentile
CISA KEV: Not listed
Weakness: CWE-400, CWE-770
Affected: discourse/discourse calendar
Source: security-advisories@github.com

References

https://github.com/discourse/discourse-calendar/security/advisories/GHSA-65f2-9ghp-x8h8Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.