Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-55969

Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings

CVE-2026-55969: Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings. Not in the CISA KEV catalog.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-55969 key facts

CISA KEV: Not listed (catalog checked Oct 28, 2026)
Highest advisory severity: High
CVSS base score: 8.7 (Apache), 7.5 (Red Hat)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (Red Hat)
Weakness: CWE-190
Fixed releases: Apache: 0.24.0
Red Hat: 0.24.0, cryostat/cryostat-storage-rhel9:4.2.0-22, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621960, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621682, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1785863006, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1785442872 and 44 more in the advisory
Vendor advisories: 2 from Apache, Red Hat
VulniPulse record: Published Jul 27, 2026 · Updated Aug 14, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-55969; bulletin-wide values are not repeated here.

Is CVE-2026-55969 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-55969 is not in the CISA KEV catalog (checked Oct 28, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-55969?

Upgrade to a fixed release named by the vendor:

Apache: 0.24.0
Red Hat: 0.24.0, cryostat/cryostat-storage-rhel9:4.2.0-22, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621960, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621682, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1785863006, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1785442872

Users are recommended to upgrade to version 0.24.0, which fixes the issue. (Apache)
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (Red Hat)

Vendor advisory comparison

Apache

1 advisory

Advisory severityHigh8.7
High [CVE-2026-55969] Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings
CVE-2026-55969Source published Jul 27, 2026Source updated Jul 27, 2026
Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue.
Affected products in this advisory
Apache Thrift
Source-reported affected versions
0.24.0
Source-reported fixed versions
0.24.0
Mitigation guidance
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityHigh7.5
High [CVE-2026-55969] Denial of Service via integer overflow or wraparound
CVE-2026-55969Source published Jul 27, 2026Source updated Jul 27, 2026
Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue. This integer overflow or wraparound vulnerability allows a remote attacker to cause a denial of service (DoS) by sending specially crafted input. The flaw can lead to the affected service becoming unavailable. This vulnerability in Apache Thrift bindings, rated as Important, allows a remote attacker to trigger a denial of service. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-190.
Affected products in this advisory
Cryostat 4 on RHEL 9
Multicluster Global Hub 1.4.9
Multicluster Global Hub 1.5.8
Multicluster Global Hub 1.6.6
26 more entries in the full advisory.
Source-reported affected versions
< 0.24.0
Source-reported fixed versions
0.24.0
cryostat/cryostat-storage-rhel9:4.2.0-22
multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621960
multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1786621682
46 more entries in the full advisory.
Mitigation guidance
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Full advisory and evidence Open source bulletin

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