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CVE-2025-53693: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore S

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CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2025-53693 is a critical-severity flaw (CVSS 9.8) affecting experience commerce, experience manager, experience platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Cache Poisoning.This issue affects Sitecore Experience Manager (XM): from 9.0 through 9.3, from 10.0 through 10.4; Experience Platform (XP): from 9.0 through 9.3, from 10.0 through 10.4.

Why this priority

  • Critical severity
  • EPSS top 3%: very likely to be exploited
  • Public exploit reference
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance19.9% (top 3%)
CISA exploited listNo
WeaknessCWE-470
Published2025-09-03
Last modified2026-10-18
Publisher (CNA): Wiz · Vendor: sitecore

Share: LinkedIn · X · Reddit

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

sitecore experience commerce UPGRADE
Affected: >= 9.0 and <= 10.4
Fixed in: newer than 10.4
Safe to downgrade to: a release before 9.0
1. Check installed version
apt-cache policy experience-commerce || rpm -q experience-commerce || experience-commerce --version
2. UPGRADE to newer than 10.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade experience-commerce
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade experience-commerce
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 9.0 (Debian / Ubuntu)
apt-cache madison experience-commerce sudo apt install experience-commerce=<VERSION_BEFORE_9.0> sudo apt-mark hold experience-commerce
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list experience-commerce sudo dnf downgrade experience-commerce-<VERSION_BEFORE_9.0> sudo dnf versionlock add experience-commerce
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.
sitecore experience manager UPGRADE
Affected: >= 9.0 and <= 10.4
Fixed in: newer than 10.4
Safe to downgrade to: a release before 9.0
1. Check installed version
apt-cache policy experience-manager || rpm -q experience-manager || experience-manager --version
2. UPGRADE to newer than 10.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade experience-manager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade experience-manager
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 9.0 (Debian / Ubuntu)
apt-cache madison experience-manager sudo apt install experience-manager=<VERSION_BEFORE_9.0> sudo apt-mark hold experience-manager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list experience-manager sudo dnf downgrade experience-manager-<VERSION_BEFORE_9.0> sudo dnf versionlock add experience-manager
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.
sitecore experience platform UPGRADE
Affected: >= 9.0 and < 10.4 · 10.4
Fixed in: 10.4
Safe to downgrade to: a release before 9.0
1. Check installed version
apt-cache policy experience-platform || rpm -q experience-platform || experience-platform --version
2. UPGRADE to 10.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade experience-platform
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade experience-platform
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 9.0 (Debian / Ubuntu)
apt-cache madison experience-platform sudo apt install experience-platform=<VERSION_BEFORE_9.0> sudo apt-mark hold experience-platform
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list experience-platform sudo dnf downgrade experience-platform-<VERSION_BEFORE_9.0> sudo dnf versionlock add experience-platform
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.
sitecore managed cloud MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy managed-cloud || rpm -q managed-cloud || managed-cloud --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · pipx · FIXED · 1.18.9-1.fc46 · FEDORA-2026-95305954ab · source
sudo dnf upgrade --advisory=FEDORA-2026-95305954ab
Fedora ELN · libisds · FIXED · 0.11.2-19.eln159 · FEDORA-2026-bf61b68668 · source
sudo dnf upgrade --advisory=FEDORA-2026-bf61b68668

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

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-2025-53693?

experience commerce: upgrade to newer than 10.4; experience manager: upgrade to newer than 10.4; experience platform: upgrade to 10.4. Exact commands for each OS are on this page.

Is CVE-2025-53693 being exploited?

CVE-2025-53693 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-2025-53693 affect?

CVE-2025-53693 affects experience commerce, experience manager, experience platform. Severity is critical (CVSS 9.8). Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Cache Poisoning.This issue affects Sitecore Experience M

How urgent is CVE-2025-53693?

Priority 72/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

References

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