How severe is CVE-2026-29791?

CVE-2026-29791 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-29791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29791?

CVE-2026-29791 affects Lfprojects Agentgateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29791?

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

Does CVE-2026-29791 have an EU (EUVD) identifier?

Yes. CVE-2026-29791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10070.

When was CVE-2026-29791 published?

CVE-2026-29791 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-29791

CVE-2026-29791 is a medium-severity vulnerability in Lfprojects Agentgateway with a CVSS 3.x base score of 4.9. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10070
Weakness: CWE-20
Affected product: Lfprojects Agentgateway
Published: 2026-03-06
Last modified: 2026-06-17

Description

Agentgateway is an open source data plane for agentic AI connectivity within or across any agent framework or environment. Prior to version 0.12.0, when converting MCP tools/call request to OpenAPI request, input path, query, and header values are not sanitized. This issue has been patched in version 0.12.0.

Frequently asked questions

What is CVE-2026-29791?: Agentgateway is an open source data plane for agentic AI connectivity within or across any agent framework or environment. Prior to version 0.12.0, when converting MCP tools/call request to OpenAPI request, input path, query, and header values are not sanitized. This issue has been patched in version 0.12.0.
How severe is CVE-2026-29791?: CVE-2026-29791 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-29791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29791?: CVE-2026-29791 affects Lfprojects Agentgateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29791 have an EU (EUVD) identifier?: Yes. CVE-2026-29791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10070.
When was CVE-2026-29791 published?: CVE-2026-29791 was published on 2026-03-06 and last updated on 2026-06-17.

References

https://github.com/agentgateway/agentgateway/security/advisories/GHSA-v2x6-wwfw-r2rq

Affected products (1)

cpe:2.3:a:lfprojects:agentgateway:*:*:*:*:*:*:*:*

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