Vulnerability · Published Oct 2, 2026 · Assigned by apache

CVE-2026-86535Apache Thrift: A JSON member name can stall the Node server's event loop indefinitely

High 8.7

In plain English

A high-severity infinite loop in Apache Thrift from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.4%top 70.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Loop with unreachable exit condition ('infinite loop'), Improperly controlled modification of object prototype attributes ('prototype pollution') vulnerability in Apache Thrift NodeJS bindings with TJSONProtocol. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	thrift	no fix listed	DEBIAN-CVE-2026-86535
Debian:13	thrift	no fix listed	DEBIAN-CVE-2026-86535
Debian:14	thrift	no fix listed	DEBIAN-CVE-2026-86535
Ubuntu:22.04:LTS	thrift	no fix listed	UBUNTU-CVE-2026-86535
Ubuntu:24.04:LTS	thrift	no fix listed	UBUNTU-CVE-2026-86535
Ubuntu:26.04:LTS	thrift	no fix listed	UBUNTU-CVE-2026-86535
Ubuntu:26.10	thrift	no fix listed	UBUNTU-CVE-2026-86535

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache Thrift	0 – before 0.25.0

Weakness: CWE-835, CWE-1321 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1 vendor-advisory
https://lists.apache.org/thread/94cvvzzl0rh707bn2j4zt844v547508g vendor-advisory