Vulnerability in Discourse
CVE-2025-61598
Discourse is an open source discussion platform. Version before 3.6.2 and 3.6.0.beta2, default Cache-Control response header with value no-store, no-cache was missing from error responses. This may caused unintended caching of those responses by proxies potentially leading to cache poisoning attacks. This vulnerability is fixed in 3.6.2 and 3.6.0.beta2.
EPSS: 0.003 (20.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Discourse — versions 3.6.0, >= 3.6.0.beta1, < 3.6.0.beta2, < 3.6.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-61598?
- CVE-2025-61598 is a medium-severity vulnerability in Discourse, classified under Use of Cache Containing Sensitive Information. CVSS score: 5.3/10. Published 2025-10-28.
- How severe is CVE-2025-61598?
- Medium severity. CVSS v3 base score is 5.3 out of 10.