Read the docs
TI-2026-53641 Aliases CVE-2026-76763

Io.smallrye/smallrye-graphql: smallrye graphql: unauthenticated denial of service via large exponent float literals

Priority MEDIUM 40CWE-1284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw was found in SmallRye GraphQL. The number scalar coercion for BigInteger does not properly validate the magnitude of float or string inputs. An unauthenticated remote attacker can exploit this by sending a GraphQL query containing a large exponent float literal. This can lead to the allocation of extremely large BigInteger objects, causing CPU exhaustion or an OutOfMemoryError, resulting in a denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00793 56th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat build of Quarkus 3.27.5.SP1—2.14.2.redhat-00002Patch availableCNA
Red HatRed Hat build of Quarkus 3.33.3.SP1—2.17.0.redhat-00003Patch availableCNA
  • Red Hat build of Quarkus 3.27.5.SP1 VendorRed Hat Affected — Fixed in 2.14.2.redhat-00002 Patch available CNA
  • Red Hat build of Quarkus 3.33.3.SP1 VendorRed Hat Affected — Fixed in 2.17.0.redhat-00003 Patch available CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:/a:redhat:quarkus:3.273.27—Red Hat
cpe:/a:redhat:quarkus:3.333.33—Red Hat
  • cpe:/a:redhat:quarkus:3.27 Versions 3.27 — ·Red Hat
  • cpe:/a:redhat:quarkus:3.33 Versions 3.33 — ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2026:62555 Released 2026-09-03 · Red Hat rating Important
    Red Hat build of Quarkus 3.33.3.SP1 release and security update
    • Red Hat build of Quarkus 3.33.3.SP1 io.netty.netty-codec-http-4.1.137.Final-redhat-00001.jar, io.netty.netty-handler-4.1.137.Final-redhat-00001.jar, io.quarkus.quarkus-oidc-3.33.3.redhat-00005.jar +6
  • RHSA-2026:62515 Released 2026-09-03 · Red Hat rating Important
    Red Hat build of Quarkus 3.27.5.SP1 release and security update
    • Red Hat build of Quarkus 3.27.5.SP1 io.netty.netty-codec-http-4.1.137.Final-redhat-00001.jar, io.netty.netty-handler-4.1.137.Final-redhat-00001.jar, io.quarkus.quarkus-apache-httpclient-3.27.5.redhat-00004.jar +7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat build of Quarkus 3.27.5.SP1, Red Hat build of Quarkus 3.33.3.SP1 — RHSA-2026:62515

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-10988 Io.quarkus:quarkus-qute: quarkus-qute:server-side template injection (ssti) vulnerability…Priority MEDIUM 42
    • TI-2026-14443 Resteasy-core: resteasy sourceprovider remote unauthenticated file readPriority MEDIUM 40
    Show all 3 records → Advisory →
  • Advisory ·

    Red Hat build of Quarkus 3.27.5.SP1, Red Hat build of Quarkus 3.33.3.SP1 — RHSA-2026:62555

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-10988 Io.quarkus:quarkus-qute: quarkus-qute:server-side template injection (ssti) vulnerability…Priority MEDIUM 42
    • TI-2026-14443 Resteasy-core: resteasy sourceprovider remote unauthenticated file readPriority MEDIUM 40
    Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat build of Quarkus 3.27.5.SP1Fixed RHSA-2026:62515
Red Hat build of Quarkus 3.33.3.SP1Fixed RHSA-2026:62555
Not affected: 2 products
  • Red Hat build of Quarkus 3.27.5.SP1
  • Red Hat build of Quarkus 3.33.3.SP1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-76763
  2. 2026-10-09 Fix available: RHSA-2026:62555 · Red Hat
  3. 2026-10-09 Fix available: RHSA-2026:62515 · Red Hat
  4. 2026-10-20 EPSS moved to the 50th–90th percentile
  5. 2026-10-20 Fix available: io.smallrye/[email protected], io.smallrye/[email protected] · CNA
  6. 2026-10-20 2 new references · CNA
  7. 2026-10-20 Fix available: Red Hat build of Quarkus 3.27.5.SP1, Red Hat build of Quarkus 3.33.3.SP1 · Red Hat

References

Advisory 2

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7412 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences