CVE-2026-72849 json
Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF
published 2026-07-24 3 mo ago modified 2026-10-08 31 d ago also GHSA-pvcr-8mvp-w8qr , EUVD-2026-58500
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
Budibase before 3.40.0 contains a cross-site request forgery vulnerability in the chat-link handoff endpoint that allows attackers to bind an external chat identity to a victim's account. Attackers can craft a phishing page that auto-submits a POST request with a leaked confirmation token to bind their chat identity to a victim user's account, enabling impersonation within agent operations and inheritance of victim permissions.
Patch / fix
- budibase server 3.40.0
- github.com/Budibase/budibase@362e6c6 commit
- github.com/Budibase/budibase#19194 pull request
- github.com/Budibase/budibase/releases/tag/3.39.30 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N |
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/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 |
| GitHub | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @budibase/server | <=3.38.1 |
no fix listed |
Affected products
- budibase server
Classification
References
-
github.com
/Budibase/budibase/pull/19194
web
-
github.com
/Budibase/budibase/commit/362e6c654fb4da6e123c734333da2d6cbdcdb7ef
web
-
github.com
/Budibase/budibase/security/advisories/GHSA-pvcr-8mvp-w8qr
vendor-advisory, web
-
vulncheck.com
/advisories/budibase-before-identity-confusion-via-chat-link-handoff-csrf
third-party-advisory
-
github.com
/Budibase/budibase
package
-
github.com
/Budibase/budibase/releases/tag/3.39.30
web
Sources
- CVE List CVE-2026-72849
- GitHub Advisory GHSA-pvcr-8mvp-w8qr
- NVD CVE-2026-72849
Fencer Vulns 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.