CVE-2026-61140: Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2026-61140 is a critical-severity flaw (CVSS 9.8) affecting webcenter sites. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). The supported version that is affected is 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Avai

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-284, CWE-306
Published	2026-07-21
Last modified	2026-10-24

Publisher (CNA): Oracle · Vendor: oracle

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

Am I affected?

Timeline

2026-07-21 22:18 UTCPublished CVE record published
2026-10-24 15:10 UTCUpdated Record last modified

oracle webcenter sites DOWNGRADE

Affected: 14.1.2.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 14.1.2.0.0

1. Check installed version

apt-cache policy webcenter-sites || rpm -q webcenter-sites || webcenter-sites --version

2. No fixed release: DOWNGRADE to a release before 14.1.2.0.0 (Debian / Ubuntu)

apt-cache madison webcenter-sites sudo apt install webcenter-sites=<VERSION_BEFORE_14.1.2.0.0> sudo apt-mark hold webcenter-sites

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list webcenter-sites sudo dnf downgrade webcenter-sites-<VERSION_BEFORE_14.1.2.0.0> sudo dnf versionlock add webcenter-sites

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

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · sugar-abacus · FIXED · 61-18.fc46 · FEDORA-2026-b1e9de9204 · source

sudo dnf upgrade --advisory=FEDORA-2026-b1e9de9204

Fedora ELN · selinux-policy · FIXED · 45.23-1.eln159 · FEDORA-2026-3668c969a2 · source

sudo dnf upgrade --advisory=FEDORA-2026-3668c969a2

Public exploits and detection

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

Write-up: www.oracle.com/security-alerts/cpujul2026.html

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-2026-61140?

webcenter sites: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-61140 being exploited?

CVE-2026-61140 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-2026-61140 affect?

CVE-2026-61140 affects webcenter sites. Severity is critical (CVSS 9.8). Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). The supported version that is affected is 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with netw

How urgent is CVE-2026-61140?

Priority 53/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-60551 CRITICAL 9.8 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
CVE-2026-60555 CRITICAL 9.8 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
CVE-2026-60550 HIGH 8.6 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
CVE-2026-60552 CRITICAL 9.9 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
CVE-2026-60556 HIGH 8.6 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)

References

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