CVE-2013-4552: lib/Auth/Source/External.php in the drupalauth module before 1.2.2 for simpleSAMLphp allows remote attackers t

Q: How do I fix CVE-2013-4552?

drupalauth: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2013-4552 being exploited?

CVE-2013-4552 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-2013-4552 affect?

CVE-2013-4552 affects drupalauth. Severity is high (CVSS 7.5). lib/Auth/Source/External.php in the drupalauth module before 1.2.2 for simpleSAMLphp allows remote attackers to authenticate as an arbitrary user via the user name (uid) in a cookie.

This month

HIGH 7.5UPGRADE

CVE-2013-4552 is a high-severity flaw (CVSS 7.5) affecting drupalauth. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lib/Auth/Source/External.php in the drupalauth module before 1.2.2 for simpleSAMLphp allows remote attackers to authenticate as an arbitrary user via the user name (uid) in a cookie.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-287
Published	2014-05-13
Last modified	2026-06-16

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

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

Am I affected?

Timeline

2014-05-13 15:55 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

drupalauth project drupalauth UPGRADE

Affected: <= 1.2.1

Fixed in: newer than 1.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.2.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade drupalauth

Note

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

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-2013-4552?

drupalauth: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Is CVE-2013-4552 being exploited?

CVE-2013-4552 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-2013-4552 affect?

CVE-2013-4552 affects drupalauth. Severity is high (CVSS 7.5). lib/Auth/Source/External.php in the drupalauth module before 1.2.2 for simpleSAMLphp allows remote attackers to authenticate as an arbitrary user via the user name (uid) in a cookie.

How urgent is CVE-2013-4552?

Priority 45/100. High severity

Software pages

PHP vulnerabilities

References

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