How severe is CVE-2026-27023?

CVE-2026-27023 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-27023 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27023?

CVE-2026-27023 affects Twenty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27023?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27023 have an EU (EUVD) identifier?

Yes. CVE-2026-27023 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9845.

When was CVE-2026-27023 published?

CVE-2026-27023 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-27023

CVE-2026-27023 is a medium-severity vulnerability in Twenty with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9845
Weakness: CWE-918
Affected product: Twenty
Published: 2026-03-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-27023?: 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.
How severe is CVE-2026-27023?: CVE-2026-27023 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-27023 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27023?: CVE-2026-27023 affects Twenty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27023?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27023 have an EU (EUVD) identifier?: Yes. CVE-2026-27023 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9845.
When was CVE-2026-27023 published?: CVE-2026-27023 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:twenty:twenty:*:*:*:*:*:*:*:*

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