CVE-2026-72849 json
Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF
published 3mo ago modified last mo. also EUVD-2026-58500 , GHSA-pvcr-8mvp-w8qr
- 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
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-11).
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 |
| GitHub | 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 |
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 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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.