CVE-2026-1173VulnerabilityPublished 19 Jan 2026Updated 23 Feb 2026

CVE-2026-1173: birkir prime · Denial of Service

Affects birkir primeSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

6.9Medium

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

EPSS: 0.8% chance of exploitation in 30 days – higher than 56% 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 2026-10-26.

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

1. Immediately restrict access to the /graphql endpoint by implementing network-level controls such as IP whitelisting or firewall rules to limit exposure to trusted sources only. 2. Deploy rate limiting and request throttling on GraphQL batch queries to prevent resource exhaustion from excessive or malformed requests. 3. Monitor logs and traffic patterns for unusual spikes or malformed batch query requests targeting the /graphql endpoint. 4. If feasible, disable batch query handling temporarily until a patch or update is available. 5. Engage with the birkir project or community to track progress on a patch or updated version addressing this vulnerability. 6. Consider implementing Web Application Firewall (WAF) rules tailored to detect and block suspicious GraphQL batch query patterns. 7. For critical environments, evaluate alternative GraphQL implementations or versions not affected by this vulnerability. 8. Maintain up-to-date backups and incident response plans to quickly recover from potential denial of service incidents. These steps go beyond generic advice by focusing on access control, traffic shaping, and proactive monitoring specific to the GraphQL batch query context.

Description

A vulnerability was found in birkir prime up to 0.4.0.beta.0. The impacted element is an unknown function of the file /graphql of the component GraphQL Array Based Query Batch Handler. The manipulation results in denial of service. The attack can be executed remotely. The exploit has been made public and could 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-2026-1173 is denial of service, which can disrupt availability of services relying on birkir prime up to version 0.4.0.beta.0. Organizations using this software for GraphQL API handling may experience service outages or degraded performance if targeted by an attacker exploiting this flaw. This can affect business continuity, user experience, and potentially lead to loss of revenue or trust. Since the attack requires no authentication and can be executed remotely, the attack surface is broad. The lack of vendor response and patch increases exposure duration. While confidentiality and integrity are not directly impacted, the availability disruption can have cascading effects on dependent systems and services. Critical infrastructure or high-availability environments using birkir prime may face operational risks. The public disclosure of exploit details may lead to opportunistic attacks, especially in environments with internet-facing GraphQL endpoints.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 22:18 UTC

Technical details

References

Community reviews

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