CVE-2026-66001: frappe · Cross-Site Request Forgery (CSRF)
Affects frappeSource GCVE Database
Not known to be exploited · CVSS 8.5 High : upgrade to 16.26.0 or 15.114.0 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 16.26.0, 15.114.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 20 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade frappe to 16.26.0 or 15.114.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| frappe frappe | Affected
| Fixed in
|
Description
Frappe is a full-stack web application framework. Prior to 15.114.0 and 16.26.0, the approve and authorize functions in frappe/integrations/oauth2.py allow the OAuth2 consent flow to proceed without restricting approve to POST, without a csrf_token in frappe/templates/includes/oauth_confirmation.html, and without scoping an active OAuth token check to the requesting client. An attacker can cause an authenticated user to approve an OAuth grant or reuse authorization state for the wrong client, exposing data and permitting actions within the granted scopes. This issue is fixed in versions 15.114.0 and 16.26.0.
References
- github.com/frappe/frappe/security/advisories/GHSA-2ph8-x773-8p2x (opens in a new tab)
- github.com/frappe/frappe/pull/40073 (opens in a new tab)
- github.com/frappe/frappe/pull/40700 (opens in a new tab)
- github.com/frappe/frappe/pull/40701 (opens in a new tab)
- github.com/frappe/frappe/commit/336c7d335db762b494acdfe43aea69d459fd51d7 (opens in a new tab)
- github.com/frappe/frappe/commit/d7460769f999c68d3121b680119f8724ddd3eb9d (opens in a new tab)
- github.com/frappe/frappe/commit/eb9c1446cac13236c6d573b136786db2e46254fa (opens in a new tab)
- github.com/frappe/frappe/releases/tag/v15.114.0 (opens in a new tab)
- github.com/frappe/frappe/releases/tag/v16.26.0 (opens in a new tab)