Home/CVE/Discourse is an open source discussion platform. Version before 3.6.2 and 3.6.0.beta2, default Cache-Control response he
CVE

CVE-2025-61598

Discourse is an open source discussion platform. Version before 3.6.2 and 3.6.0.beta2, default Cache-Control response he

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.

MEDIUM · CVSS 5.3 EPSS 0.0006
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-524Use of Cache Containing Sensitive Information
▤

Affected Products & Versions

3
discourse< 3.5.2
discourse< 3.6.0
discourseall versions
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Oct 2025 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/discourse/discourse/commit/3ea1b663c82c067e5ca778db846bad1e082ba6cdPatch
https://github.com/discourse/discourse/commit/fd567af7bf5a15c70772021acbdf5d38487a31bcPatch
https://github.com/discourse/discourse/security/advisories/GHSA-jp9x-wwv6-cv3jThird Party Advisory
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