CVE-2015-5513: Cross-site scripting (XSS) vulnerability in the Shibboleth authentication module 6.x-4.x before 6.x-4.2 and 7.

Routine

LOW 2.1DOWNGRADE

CVE-2015-5513 is a low-severity flaw (CVSS 2.1) affecting shibboleth authentication. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Shibboleth authentication module 6.x-4.x before 6.x-4.2 and 7.x-4.x before 7.x-4.2 for Drupal allows remote authenticated users with the "Administer blocks" permission to inject arbitrary web script or HTML via unspecified vectors related to a login link.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-08-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: niif

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

niif shibboleth authentication DOWNGRADE

Affected: 6.x-4.0 · 6.x-4.1 · 6.x-4.2rc1 · 7.x-4.0 · 7.x-4.1 · 7.x-4.2 rc1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.x-4.0

1. Check installed version

apt-cache policy shibboleth-authentication || rpm -q shibboleth-authentication || shibboleth-authentication --version

2. No fixed release: DOWNGRADE to a release before 6.x-4.0 (Debian / Ubuntu)

apt-cache madison shibboleth-authentication sudo apt install shibboleth-authentication=<VERSION_BEFORE_6.x-4.0> sudo apt-mark hold shibboleth-authentication

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

dnf --showduplicates list shibboleth-authentication sudo dnf downgrade shibboleth-authentication-<VERSION_BEFORE_6.x-4.0> sudo dnf versionlock add shibboleth-authentication

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-2015-5513?

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

Is CVE-2015-5513 being exploited?

CVE-2015-5513 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-2015-5513 affect?

CVE-2015-5513 affects shibboleth authentication. Severity is low (CVSS 2.1). Cross-site scripting (XSS) vulnerability in the Shibboleth authentication module 6.x-4.x before 6.x-4.2 and 7.x-4.x before 7.x-4.2 for Drupal allows remote authenticated users with the "Administer blocks" permission to inject arbitrary web

How urgent is CVE-2015-5513?

Priority 26/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

Related CVEs

CVE-2015-3375 MEDIUM 5.8 UPGRADE Cross-site request forgery (CSRF) vulnerability in the Shibboleth Authentication module before 6.x-4.1 and 7.x

References

← Back to latest CVEs