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CVE-2026-71560: Out-of-bounds Read vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ versi

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CRITICAL 9.1REMOTEWATCHLISTUPGRADE

CVE-2026-71560 is a critical-severity flaw (CVSS 9.1) affecting fory. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 is

Why this priority

  • Critical severity
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score9.1 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.8% (top 45%)
CISA exploited listNo
WeaknessCWE-502, CWE-125
Published2026-08-07
Last modified2026-10-24
Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apache fory UPGRADE
Affected: >= 0.14.0 and < 1.5.0
Fixed in: 1.5.0
Safe to downgrade to: a release before 0.14.0
1. Check installed version
apt-cache policy fory || rpm -q fory || fory --version
2. UPGRADE to 1.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fory
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fory
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 0.14.0 (Debian / Ubuntu)
apt-cache madison fory sudo apt install fory=<VERSION_BEFORE_0.14.0> sudo apt-mark hold fory
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list fory sudo dnf downgrade fory-<VERSION_BEFORE_0.14.0> sudo dnf versionlock add fory
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Fedora 46 · pspp · FIXED · 2.1.3-2.fc46 · FEDORA-2026-0d6444911b · source
sudo dnf upgrade --advisory=FEDORA-2026-0d6444911b
Fedora ELN · barman · FIXED · 3.20.1-3.eln159 · FEDORA-2026-45ecf042c2 · source
sudo dnf upgrade --advisory=FEDORA-2026-45ecf042c2
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-71560?

fory: upgrade to 1.5.0. Exact commands for each OS are on this page.

Is CVE-2026-71560 being exploited?

CVE-2026-71560 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-71560 affect?

CVE-2026-71560 affects fory. Severity is critical (CVSS 9.1). 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 o

How urgent is CVE-2026-71560?

Priority 59/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

References

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