CVE-2018-1000526: Openpsa contains a XML Injection vulnerability in RSS file upload feature that can result in Remote denial of

This week

HIGH 7.5REMOTEMITIGATE

CVE-2018-1000526 is a high-severity flaw (CVSS 7.5) affecting openpsa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Openpsa contains a XML Injection vulnerability in RSS file upload feature that can result in Remote denial of service. This attack appear to be exploitable via Specially crafted XML file. This vulnerability appears to have been fixed in after commit 4974a26.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-91
Published	2018-06-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openpsa2

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

Am I affected?

Timeline

2018-06-26 16:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

openpsa2 openpsa 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 openpsa || rpm -q openpsa || openpsa --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-2018-1000526?

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

Is CVE-2018-1000526 being exploited?

CVE-2018-1000526 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-2018-1000526 affect?

CVE-2018-1000526 affects openpsa. Severity is high (CVSS 7.5). Openpsa contains a XML Injection vulnerability in RSS file upload feature that can result in Remote denial of service. This attack appear to be exploitable via Specially crafted XML file. This vulnerability appears to have been fixed in aft

How urgent is CVE-2018-1000526?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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