CVE-2025-22601 | Client Side Path Traversal using activate account route in Discourse

Discourse is an open source platform for community discussion. In affected versions an attacker can trick a target user to make changes to their own username via carefully crafted link using the `activate-account` route. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Published: 2025-02-04 Last update: 2025-09-25 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-22601 is rated Low Risk (31.5/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.33%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-22601

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-19 0.77% 0.33% -0.44%
2 2026-03-16 0.48% 0.77% +0.29%
3 2026-03-15 — 0.48% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-22601

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.1 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 1.4 [email protected]

Weakness enumeration for CVE-2025-22601

Affected software / configurations for CVE-2025-22601

Vendor Product Version Raw CPE
discourse discourse < 3.4.0 cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*
discourse discourse 3.4.0 cpe:2.3:a:discourse:discourse:3.4.0:beta1:*:*:beta:*:*:*
discourse discourse 3.4.0 cpe:2.3:a:discourse:discourse:3.4.0:beta2:*:*:beta:*:*:*
discourse discourse 3.4.0 cpe:2.3:a:discourse:discourse:3.4.0:beta3:*:*:beta:*:*:*

References for CVE-2025-22601

cvelogic Threat Intelligence