CVE-2011-2195: A flaw was found in WebSVN 2.3.2

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2011-2195 is a critical-severity flaw (CVSS 9.8) affecting websvn. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in WebSVN 2.3.2. Without prior authentication, if the 'allowDownload' option is enabled in config.php, an attacker can invoke the dl.php script and pass a well formed 'path' argument to execute arbitrary commands against the underlying operating system.

Why this priority

Critical 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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-78
Published	2021-10-26
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: websvn

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

Am I affected?

Timeline

2021-10-26 13:15 UTCPublished CVE record published
2026-06-16 23:30 UTCUpdated Record last modified

websvn websvn DOWNGRADE

Affected: 2.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.3.2 (Debian / Ubuntu)

apt-cache madison websvn sudo apt install websvn=<VERSION_BEFORE_2.3.2> sudo apt-mark hold websvn

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

dnf --showduplicates list websvn sudo dnf downgrade websvn-<VERSION_BEFORE_2.3.2> sudo dnf versionlock add websvn

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-2011-2195?

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

Is CVE-2011-2195 being exploited?

CVE-2011-2195 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-2011-2195 affect?

CVE-2011-2195 affects websvn. Severity is critical (CVSS 9.8). A flaw was found in WebSVN 2.3.2. Without prior authentication, if the 'allowDownload' option is enabled in config.php, an attacker can invoke the dl.php script and pass a well formed 'path' argument to execute arbitrary commands against th

How urgent is CVE-2011-2195?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-32305 CRITICAL 9.8 UPGRADE WebSVN before 2.6.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the sear

References

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