CVE-2026-66057 json
Frappe: Open Redirect via Unsanitized OAuth State Param.
published 2mo ago modified 28d ago also EUVD-2026-98927 , GHSA-78c5-55xg-jm7m
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository frappe/frappe. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.1
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Frappe is a full-stack web application framework. Prior to 15.116.0 and 16.29.0, the OAuth login flow uses an unsanitized client-controlled state parameter to select post-authentication navigation, allowing a crafted state value to redirect a user to an attacker-chosen location. This issue is fixed in versions 15.116.0 and 16.29.0.
Patch / fix
- frappe frappe 15.116.0, 16.29.0
- github.com/frappe/frappe@12568e2 commit
- github.com/frappe/frappe@1e0a3b9 commit
- github.com/frappe/frappe@6ed8acd commit
- github.com/frappe/frappe#40962 pull request
- github.com/frappe/frappe/releases/tag/v15.116.0 release
- github.com/frappe/frappe/releases/tag/v16.29.0 release
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 28d ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- frappe frappe
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
- github.com /frappe/frappe/pull/40962
- github.com /frappe/frappe/commit/12568e2d54c4abba70bc0261387053fa28f90988
- github.com /frappe/frappe/commit/1e0a3b941231d74a71ff1a43eee2e9f63c88712d
- github.com /frappe/frappe/commit/6ed8acd869199feb3a2598887d471448297edf07
-
github.com
/frappe/frappe/security/advisories/GHSA-78c5-55xg-jm7m
advisory
- github.com /frappe/frappe/releases/tag/v15.116.0
- github.com /frappe/frappe/releases/tag/v16.29.0
Sources
- CVE List CVE-2026-66057
- NVD CVE-2026-66057
- Maintainer advisory GHSA-78c5-55xg-jm7m
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of frappe/frappe published their own advisory on GitHub. Reviewed sources take precedence over it.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.