CVE-2011-3753: LinPHA 1.3.4 allows remote attackers to obtain sensitive information via a direct request to a .php file, whic

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MEDIUM 5.0DOWNGRADE

CVE-2011-3753 is a medium-severity flaw (CVSS 5.0) affecting linpha. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LinPHA 1.3.4 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by viewer.php and certain other files.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-200
Published	2011-09-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: linpha

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-09-23 23:55 UTCPublished CVE record published
2026-06-16 23:33 UTCUpdated Record last modified

linpha linpha DOWNGRADE

Affected: 1.3.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.4

1. Check installed version

apt-cache policy linpha || rpm -q linpha || linpha --version

2. No fixed release: DOWNGRADE to a release before 1.3.4 (Debian / Ubuntu)

apt-cache madison linpha sudo apt install linpha=<VERSION_BEFORE_1.3.4> sudo apt-mark hold linpha

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

dnf --showduplicates list linpha sudo dnf downgrade linpha-<VERSION_BEFORE_1.3.4> sudo dnf versionlock add linpha

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-2011-3753?

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

Is CVE-2011-3753 being exploited?

CVE-2011-3753 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-2011-3753 affect?

CVE-2011-3753 affects linpha. Severity is medium (CVSS 5.0). LinPHA 1.3.4 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by viewer.php and certain other files.

How urgent is CVE-2011-3753?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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References

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