CVE•Published 2026-08-07•Modified 2026-08-08•1 article on news•4 live references•NVD data

CVE-2026-71558Apache · Fory

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-502Deserialization of Untrusted Data CWE-843Access of Resource Using Incompatible Type ('Type Confusion')

Description

Heap type confusion vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0. A crafted input payload can bypass type compatibility checks during polymorphic smart-pointer deserialization, causing an object of an incompatible type to be treated as the declared base type. This may result in undefined behavior and potentially lead to denial of service or arbitrary code execution. Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications not using Apache Fory C++ polymorphic smart-pointer deserialization are not affected.

Timeline

Published 2026-08-07

Modified 2026-08-08

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-71558

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Apache Fory"

All exposed Apache Fory instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Fory"

HTTP body or banner mentions "Fory" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-71558