CVE-2026-1172 identifies a denial of service (DoS) vulnerability in the birkir prime project, specifically affecting versions up to 0.4.0.beta.0. The vulnerability resides in an unspecified function within the GraphQL Directive Handler component, which is accessible via the /graphql endpoint. An attacker can remotely exploit this flaw without any authentication or user interaction, by sending crafted requests that manipulate the vulnerable function, leading to service disruption. The vulnerability impacts the availability of the affected service, potentially causing crashes or resource exhaustion that prevent legitimate users from accessing GraphQL APIs. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges or user interaction required (PR:N/UI:N), and low impact on availability (VA:L), resulting in an overall medium severity score of 6.9. The vulnerability was responsibly disclosed via an issue report, but the birkir project has not yet issued a patch or official response. Public disclosure of exploit details increases the risk of exploitation, although no widespread attacks have been observed so far. The vulnerability is relevant to deployments using birkir prime for GraphQL API services, particularly in development or beta environments.

For European organizations, the primary impact of CVE-2026-1172 is the potential disruption of GraphQL-based services relying on birkir prime versions up to 0.4.0.beta.0. This can lead to denial of service conditions, affecting availability and potentially causing downtime for critical applications or APIs. Organizations using this software in production or testing environments may experience service interruptions, impacting business operations and user experience. Since the vulnerability does not affect confidentiality or integrity directly, the main concern is operational continuity. The public availability of exploit information increases the risk of opportunistic attacks, especially in sectors with high reliance on GraphQL APIs such as technology, finance, and public services. European entities with exposed /graphql endpoints on internet-facing systems are particularly at risk. The lack of vendor response and patches means organizations must rely on mitigation strategies until an official fix is released.

1. Immediately audit all systems to identify any instances of birkir prime version 0.4.0.beta.0 or earlier in use, especially those exposing the /graphql endpoint. 2. Restrict network access to the /graphql endpoint by implementing firewall rules or API gateways to limit exposure only to trusted clients or internal networks. 3. Employ rate limiting and request throttling on GraphQL endpoints to reduce the risk of resource exhaustion from crafted requests. 4. Monitor logs and network traffic for unusual or malformed GraphQL queries that could indicate exploitation attempts. 5. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious GraphQL directive manipulations. 6. If feasible, isolate vulnerable services in segmented network zones to minimize impact. 7. Engage with the birkir project community or maintainers to track patch releases and apply updates promptly once available. 8. As a longer-term measure, evaluate alternative GraphQL implementations with active maintenance and security support. 9. Conduct internal security awareness to inform developers and operators about this vulnerability and its exploitation vectors.