CVE-2026-27023 json
Twenty: SSRF protection bypass via HTTP redirect following in secure HTTP client
published 2026-03-05 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9845
- cvss
- 5.0
- 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 14%
- public exploits
- 0
- none known
Summary
Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs (e.g., webhook endpoints, image URLs) could bypass private IP blocking by redirecting through an attacker-controlled server. This issue has been patched in version 1.18.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Affected products
- twentyhq twenty
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/twentyhq/twenty/security/advisories/GHSA-wm7q-rvq3-x8q9
mitigation, vendor-advisory
-
github.com
/twentyhq/twenty/releases/tag/v1.18.0
product, release-notes
Sources
- CVE List CVE-2026-27023
- NVD CVE-2026-27023
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.