CVE Intelligence
Critical Denial of service exploit reference

CVE-2026-1173 — birkir prime GraphQL Array Based Query Batch graphql denial of service

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.

Published Jan 19, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.8% (30-day exploitation probability)+8
  • Technical severity (critical)+10
  • CISA SSVC: exploitation "poc"+5
  • Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.79%
ahead of 55% of scored CVEs · Oct 14, 2026
Affects
Birkir
Prime
CVSS base
9.8
Critical · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Proof of concept
none · proof-of-concept · active
Automatable
Yes
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Birkir Prime).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  4. Search available logs for exploit probes matching the vulnerability class (denial of service), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Birkir Prime ≤ 0.4.0 Vulnerable NIST National Vulnerability Database
Birkir Prime version 0.4.0.beta Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
6.9 CVSS 4.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
5.5 CVSS 4.0 Medium — — cna@vuldb.com via NIST National Vulnerability Database
9.8 CVSS 3.1 Critical 3.9 5.9 nvd@nist.gov via NIST National Vulnerability Database
5.3 CVSS 3.1 Medium 3.9 1.4 cna@vuldb.com via NIST National Vulnerability Database
5.3 CVSS 3.1 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
5.3 CVSS 3.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
5.0 CVSS 2.0 Medium 10.0 2.9 cna@vuldb.com via NIST National Vulnerability Database
5.0 CVSS 2.0 Medium — — VulDB via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)
Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 9.8 (NVD (NIST)) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-404 · Improper Resource Shutdown or Release

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.79%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Track CPU/memory spikes and availability drops correlated with request patterns.
web/proxy/WAF logsnetwork IDS/IPSresource metrics

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · birkir/prime
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • CVSS changed · 9.8
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVE published
    Jan 19, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

5 on the record

  • github.com/birkir/prime/issues/544
    Exploit, Issue Tracking, Vendor Advisory, exploit, issue-tracking, NIST National Vulnerability Database
  • vuldb.com/
    Third Party Advisory, VDB Entry, vdb-entry, technical-description, NIST National Vulnerability Database
  • github.com/birkir/prime/
    product, NIST National Vulnerability Database
  • vuldb.com/
    Permissions Required, VDB Entry, signature, permissions-required, NIST National Vulnerability Database
  • vuldb.com/
    Third Party Advisory, VDB Entry, third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

Birkir
every CVE for this vendor
Denial of service
same class
CWE-404
other pages naming this weakness

Related CVEs (same products)

  • CVE-2025-15550 birkir prime <= 0.4.0.beta.0 - Cross-Site Request Forgery in GraphQL Jan 29, 2026
  • CVE-2026-1175 birkir prime GraphQL Directive graphql information exposure Jan 19, 2026
  • CVE-2026-1174 birkir prime GraphQL Alias graphql resource consumption Jan 19, 2026
  • CVE-2026-1171 birkir prime GraphQL Field graphql denial of service Jan 19, 2026
  • CVE-2026-1172 birkir prime GraphQL Directive graphql denial of service Jan 19, 2026
  • CVE-2026-1169 birkir prime cross-site request forgery Jan 19, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-1173 is "birkir prime GraphQL Array Based Query Batch graphql denial of service", rated Critical. It affects Prime (Birkir); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.8 describes technical severity. EPSS 0.79% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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