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CVE-2011-0720: Unspecified vulnerability in Plone 2.5 through 4.0, as used in Conga, luci, and possibly other products, allow

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HIGH 7.5WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2011-0720 is a high-severity flaw (CVSS 7.5) affecting plone, conga, luci. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in Plone 2.5 through 4.0, as used in Conga, luci, and possibly other products, allows remote attackers to obtain administrative access, read or create arbitrary content, and change the site skin via unknown vectors.

Why this priority

  • High severity
  • On your watchlist

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

Risk facts

CVSS score7.5 (High)
EPSS exploit chance3.2% (top 12%)
CISA exploited listNo
Published2011-02-03
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: plone · redhat

Share: LinkedIn · X · Reddit

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

Am I affected?

Timeline

plone plone DOWNGRADE
Affected: 2.5 · 2.5.1 · 2.5.2 · 2.5.3 · 2.5.4 · 2.5.5 · 3.0 · 3.0.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.5
1. Check installed version
apt-cache policy plone || rpm -q plone || plone --version
2. No fixed release: DOWNGRADE to a release before 2.5 (Debian / Ubuntu)
apt-cache madison plone sudo apt install plone=<VERSION_BEFORE_2.5> sudo apt-mark hold plone
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list plone sudo dnf downgrade plone-<VERSION_BEFORE_2.5> sudo dnf versionlock add plone
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.
redhat conga 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 conga || rpm -q conga || conga --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
redhat luci 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 luci || rpm -q luci || luci --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-2011-0720?

plone: downgrade or apply the listed mitigation; conga: mitigate or apply the listed mitigation; luci: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-0720 being exploited?

CVE-2011-0720 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-2011-0720 affect?

CVE-2011-0720 affects plone, conga, luci. Severity is high (CVSS 7.5). Unspecified vulnerability in Plone 2.5 through 4.0, as used in Conga, luci, and possibly other products, allows remote attackers to obtain administrative access, read or create arbitrary content, and change the site skin via unknown vectors

How urgent is CVE-2011-0720?

Priority 53/100. High severity; On your watchlist

Related CVEs

References

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