CVE-2020-26649: AtomXCMS 2.0 is affected by Incorrect Access Control via admin/dump.php

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HIGH 8.1MITIGATE

CVE-2020-26649 is a high-severity flaw (CVSS 8.1) affecting atomxcms 2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AtomXCMS 2.0 is affected by Incorrect Access Control via admin/dump.php

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-306, CWE-862
Published	2020-10-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: atomx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-10-22 15:15 UTCPublished CVE record published
2026-06-17 03:08 UTCUpdated Record last modified

atomx atomxcms 2 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 atomxcms-2 || rpm -q atomxcms-2 || atomxcms-2 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2020-26649?

atomxcms 2: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-26649 being exploited?

CVE-2020-26649 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-2020-26649 affect?

CVE-2020-26649 affects atomxcms 2. Severity is high (CVSS 8.1). AtomXCMS 2.0 is affected by Incorrect Access Control via admin/dump.php

How urgent is CVE-2020-26649?

Priority 47/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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