How severe is CVE-2026-42073?

CVE-2026-42073 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-42073 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42073?

CVE-2026-42073 affects Gitlawb Openclaude. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42073?

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

Does CVE-2026-42073 have an EU (EUVD) identifier?

Yes. CVE-2026-42073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33973.

When was CVE-2026-42073 published?

CVE-2026-42073 was published on 2026-06-02 and last updated on 2026-06-17.

CVE-2026-42073

CVE-2026-42073 is a medium-severity vulnerability in Gitlawb Openclaude with a CVSS 3.x base score of 6.5. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33973
Weakness: CWE-352
Affected product: Gitlawb Openclaude
Published: 2026-06-02
Last modified: 2026-06-17

Description

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1.

Frequently asked questions

What is CVE-2026-42073?: OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1.
How severe is CVE-2026-42073?: CVE-2026-42073 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-42073 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42073?: CVE-2026-42073 affects Gitlawb Openclaude. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42073?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42073 have an EU (EUVD) identifier?: Yes. CVE-2026-42073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33973.
When was CVE-2026-42073 published?: CVE-2026-42073 was published on 2026-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gitlawb:openclaude:*:*:*:*:*:*:*:*

More vulnerabilities in Gitlawb Openclaude

CVE-2026-42074 — Critical (CVSS 9.8): OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version…
CVE-2026-35570 — High (CVSS 8.4): OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Versions prior to…

All CVEs affecting Gitlawb Openclaude →

Other CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities

CVE-2025-32642 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in appsbd Vite Coupon vite-coupon allows Remote Code Inclusion.This…
CVE-2025-23922 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in Harsh iSpring Embedder embed-ispring allows Upload a Web Shell to a…
CVE-2017-5145 — Critical (CVSS 10.0): An issue was discovered in Carlo Gavazzi VMU-C EM prior to firmware Version A11_U05, and VMU-C PV prior to firmware…
CVE-2019-25729 — Critical (CVSS 9.8): PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute…
CVE-2025-48340 — Critical (CVSS 9.8): Cross-Site Request Forgery (CSRF) vulnerability in Danny Vink User Profile Meta Manager user-profile-meta allows…
CVE-2025-2907 — Critical (CVSS 9.8): The Order Delivery Date WordPress plugin before 12.3.1 does not have authorization and CSRF checks when importing…

Browse all CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities →