CVE-2015-5506: The Apache Solr Real-Time module 7.x-1.x before 7.x-1.2 for Drupal does not check the status of an entity when

This month

MEDIUM 5.0WATCHLISTDOWNGRADE

CVE-2015-5506 is a medium-severity flaw (CVSS 5.0) affecting apache solr real-time. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Apache Solr Real-Time module 7.x-1.x before 7.x-1.2 for Drupal does not check the status of an entity when indexing, which allows remote attackers to obtain information about unpublished content via a search.

Why this priority

On your watchlist

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-200
Published	2015-08-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: apache solr real-time project

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

Am I affected?

Timeline

2015-08-18 18:00 UTCPublished CVE record published
2026-06-17 00:29 UTCUpdated Record last modified

apache solr real-time project apache solr real-time DOWNGRADE

Affected: 7.x-1.0 · 7.x-1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.x-1.0

1. Check installed version

apt-cache policy apache-solr-real-time || rpm -q apache-solr-real-time || apache-solr-real-time --version

2. No fixed release: DOWNGRADE to a release before 7.x-1.0 (Debian / Ubuntu)

apt-cache madison apache-solr-real-time sudo apt install apache-solr-real-time=<VERSION_BEFORE_7.x-1.0> sudo apt-mark hold apache-solr-real-time

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

dnf --showduplicates list apache-solr-real-time sudo dnf downgrade apache-solr-real-time-<VERSION_BEFORE_7.x-1.0> sudo dnf versionlock add apache-solr-real-time

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-2015-5506?

apache solr real-time: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-5506 being exploited?

CVE-2015-5506 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-2015-5506 affect?

CVE-2015-5506 affects apache solr real-time. Severity is medium (CVSS 5.0). The Apache Solr Real-Time module 7.x-1.x before 7.x-1.2 for Drupal does not check the status of an entity when indexing, which allows remote attackers to obtain information about unpublished content via a search.

How urgent is CVE-2015-5506?

Priority 43/100. On your watchlist

Software pages

Drupal vulnerabilities · Apache Solr vulnerabilities

References

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