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

Q: How do I fix CVE-2021-32305?

websvn: upgrade to 2.6.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-32305 being exploited?

CVE-2021-32305 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32305 affect?

CVE-2021-32305 affects websvn. Severity is critical (CVSS 9.8). WebSVN before 2.6.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the search parameter.

Q: How urgent is CVE-2021-32305?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-32305 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.

WebSVN before 2.6.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the search parameter.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	87.3% (top 1%)
CISA exploited list	No
Weakness	CWE-78
Published	2021-05-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: websvn

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

Am I affected?

Timeline

2021-05-18 17:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

websvn websvn UPGRADE

Affected: < 2.6.1

Fixed in: 2.6.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.6.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade websvn

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade websvn

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Websvn 2.6.0 - Remote Code Execution (Unauthenticated)
Nuclei scan template: Websvn <2.6.1 - Remote Code Execution

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-2021-32305?

websvn: upgrade to 2.6.1. Exact commands for each OS are on this page.

Is CVE-2021-32305 being exploited?

CVE-2021-32305 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-2021-32305 affect?

CVE-2021-32305 affects websvn. Severity is critical (CVSS 9.8). WebSVN before 2.6.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the search parameter.

How urgent is CVE-2021-32305?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2011-2195 CRITICAL 9.8 DOWNGRADE A flaw was found in WebSVN 2.3.2

References

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