Cyber Resilience

CVE-2026-43868

Apache Thrift ≤ 0.23.0

Published
05 May 2026
Modified
21 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0071 50th percentile
Risk Priority 45 floored blend · peak EPSS

Summary

CVE-2026-43868 is a medium-severity Memory Allocation with Excessive Size Value (CWE-789) vulnerability in Apache Thrift. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Endpoint Denial of Service (T1499); ranked in the top 50% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SC-6 (Resource Availability) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Memory Allocation with Excessive Size Value vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

CWE(s)
CWE-789CWE-1285

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
T1499.003 Application Exhaustion Flood Impact
Adversaries may target resource intensive features of applications to cause a denial of service (DoS), denying availability to those applications.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-58662Same product: Apache Thrift
CVE-2026-55971Same product: Apache Thrift
CVE-2025-48431Same product: Apache Thrift
CVE-2026-41604Same product: Apache Thrift
CVE-2026-41607Same product: Apache Thrift
CVE-2026-58023Same product: Apache Thrift
CVE-2026-55969Same product: Apache Thrift
CVE-2026-41602Same product: Apache Thrift
CVE-2026-41605Same product: Apache Thrift
CVE-2026-48586Same product: Apache Thrift

Affected Assets

apache
thrift
≤ 0.23.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.4.2
  • V2.1.1
  • V2.2.1
  • V2.2.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly rejects or bounds untrusted size values before any allocation occurs.

SC-6 Resource Availability partial match

Resource quotas and priority allocation limit the system-wide impact of an oversized request.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent coding flaws that trust unvalidated size values for allocations.

ID.RA-01 partial match
prevents

Vulnerability identification processes can discover missing index validation via scanning or reviews.

PR.PS-02 partial match
prevents

Patching and replacement can remediate instances of the weakness after discovery.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect and block excessive allocation flaws before deployment.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes input validation and size checks that prevent unbounded allocations.

A.8.26 Application security requirements partial match
prevents

Application security requirements mandate bounds checking on size parameters to avoid excessive memory allocation.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles require resource-limit enforcement that mitigates uncontrolled memory requests.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit allocating memory from untrusted size values without validation.

A.8.6 Capacity management none match
none

Capacity management monitors overall resource use but does not prevent individual allocation bugs.

References