CVE-2026-1172VulnerabilityPublished 19 Jan 2026Updated 23 Feb 2026

CVE-2026-1172: birkir prime · Denial of Service

Affects birkir primeSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
birkirprime	Affected =0.4.0.beta	Fixed in–
GitHubbirkir/prime`pkg:github/birkir/prime`Other threats	Affected–	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Given the lack of an official patch, organizations should implement specific mitigations to reduce exposure. First, restrict network access to the /graphql endpoint by implementing firewall rules or network segmentation to limit requests to trusted sources only. Second, deploy Web Application Firewalls (WAFs) with custom rules to detect and block suspicious or malformed GraphQL queries that could trigger the vulnerability. Third, enable rate limiting on GraphQL endpoints to prevent abuse from automated or high-volume attack attempts. Fourth, monitor logs and network traffic for unusual patterns indicative of exploitation attempts. Fifth, consider temporarily disabling or limiting the use of GraphQL directives if feasible, as the vulnerability resides in the directive handler. Finally, maintain close communication with the birkir project for updates and apply patches promptly once available. Organizations should also prepare incident response plans to quickly address potential denial of service incidents related to this vulnerability.

Description

A vulnerability has been found in birkir prime up to 0.4.0.beta.0. The affected element is an unknown function of the file /graphql of the component GraphQL Directive Handler. The manipulation leads to denial of service. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Impact

The primary impact of CVE-2026-1172 is the potential for denial of service, which can disrupt availability of applications relying on birkir prime's GraphQL services. Organizations using this software in production environments may experience service outages, leading to downtime, degraded user experience, and potential loss of business continuity. Since the vulnerability does not affect confidentiality or integrity, data breaches or unauthorized data modification are not direct concerns. However, denial of service can indirectly affect organizational reputation and operational efficiency. The ease of remote exploitation without authentication increases the risk, especially for publicly accessible GraphQL endpoints. This could be leveraged by attackers to cause repeated service interruptions or as part of larger multi-vector attacks. The absence of an official patch means organizations must rely on temporary mitigations or workarounds, increasing operational complexity and risk exposure until a fix is available.

Summary

CVE-2026-1172 identifies a denial of service vulnerability in the birkir prime software, specifically affecting versions up to 0.4.0.beta.0. The vulnerability is located in an unspecified function within the /graphql endpoint's GraphQL Directive Handler component. This component processes GraphQL directives, which are instructions that modify query execution. The vulnerability allows an attacker to craft malicious requests that cause the service to crash or become unresponsive, resulting in denial of service. The attack vector is remote network access, requiring no privileges or user interaction, making exploitation straightforward. The CVSS 4.0 base score is 6.9, reflecting medium severity with network attack vector, low impact on availability, and no impact on confidentiality or integrity. While no exploits have been detected in the wild, the public disclosure of the vulnerability and its details increases the likelihood of exploitation attempts. The lack of a patch and the ease of remote exploitation make this a relevant threat for users of birkir prime, particularly those exposing GraphQL endpoints to untrusted networks.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 22:17 UTC

Technical details

References

Community reviews

Related threats