CVE-2026-35266: Vulnerability in Oracle REST Data Services (component: Core)

Routine

HIGH 7.9UPGRADE

CVE-2026-35266 is a high-severity flaw (CVSS 7.9) affecting rest data services. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle REST Data Services. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional produ

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.9 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-400, CWE-352
Published	2026-05-28
Last modified	2026-10-26

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-28 21:16 UTCPublished CVE record published
2026-10-26 13:10 UTCUpdated Record last modified

oracle rest data services UPGRADE

Affected: >= 24.2.0 and <= 26.1.0

Fixed in: newer than 26.1.0

Safe to downgrade to: a release before 24.2.0

1. Check installed version

apt-cache policy rest-data-services || rpm -q rest-data-services || rest-data-services --version

2. UPGRADE to newer than 26.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rest-data-services

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rest-data-services

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 24.2.0 (Debian / Ubuntu)

apt-cache madison rest-data-services sudo apt install rest-data-services=<VERSION_BEFORE_24.2.0> sudo apt-mark hold rest-data-services

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list rest-data-services sudo dnf downgrade rest-data-services-<VERSION_BEFORE_24.2.0> sudo dnf versionlock add rest-data-services

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.

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-2026-35266?

rest data services: upgrade to newer than 26.1.0. Exact commands for each OS are on this page.

Is CVE-2026-35266 being exploited?

CVE-2026-35266 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-2026-35266 affect?

CVE-2026-35266 affects rest data services. Severity is high (CVSS 7.9). Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle REST

How urgent is CVE-2026-35266?

Priority 28/100. High severity

Related CVEs

CVE-2026-35277 HIGH 8.1 UPGRADE Vulnerability in Oracle REST Data Services (component: Core)

References

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