CVE & CISA-KEV Catalog

CVE-2026-27023

MEDIUM
5.0
CVSS v3
NVD

Description

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.

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available
twentyNVD
Affected:< 1.18.0Fixed in:1.18.0CVE-2026-27023derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Exploit Intelligence

0.20%probability of exploitation in 30 days
10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Vendor Advisory1
Release Notes1

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-21893High8.2100%KEV + Ransom-
CVE-2021-40438Critical9.0100%KEVFix
CVE-2021-34473Critical9.1100%KEV + RansomFix
CVE-2021-26855Critical9.1100%KEV + RansomFix
CVE-2021-21985Critical9.8100%KEV + RansomFix
CVE-2022-41040High8.8100%KEV + RansomFix
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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-10.