What is CVE-2026-71560?

CVE-2026-71560 is a critical-severity vulnerability in Apache Fory, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2026-08-07.

How severe is CVE-2026-71560?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Out-of-bounds Read in Apache Fory

CVE-2026-71560

Out-of-bounds Read vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0 when deserializing structs containing tagged integer fields. A crafted input payload may trigger an out-of-bounds heap read in the tagged integer fast-path deserializer, potentially causing information disclosure or denial of service. Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications that do not use Apache Fory C++ or do not use tagged integer fields are not affected.

Vulnerability class: Insecure Deserialization

Published 2026-08-07 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.6th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Apache Fory
Apache Software Foundation Fory — versions 0.14.0

Weakness classification (CWE)

References

lists.apache.org/thread/xl2g544kctbgozccnj35qts43p452y5x (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-71560?: CVE-2026-71560 is a critical-severity vulnerability in Apache Fory, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2026-08-07.
How severe is CVE-2026-71560?: Critical severity. CVSS v3 base score is 9.1 out of 10.