CVE-2015-3989: Multiple cross-site scripting (XSS) vulnerabilities in concrete5 before 5.7.4 allow remote attackers to inject

Q: How do I fix CVE-2015-3989?

concrete5: upgrade to newer than 5.7.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2015-3989 being exploited?

CVE-2015-3989 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-2015-3989 affect?

CVE-2015-3989 affects concrete5. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in concrete5 before 5.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors related to private messages or other unspecified vectors.

Q: How urgent is CVE-2015-3989?

Priority 30/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2015-3989 is a medium-severity flaw (CVSS 4.3) affecting concrete5. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in concrete5 before 5.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors related to private messages or other unspecified vectors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-05-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: concrete5

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

Am I affected?

Timeline

2015-05-15 18:59 UTCPublished CVE record published
2026-06-17 00:26 UTCUpdated Record last modified

concrete5 concrete5 UPGRADE

Affected: <= 5.7.3.1

Fixed in: newer than 5.7.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy concrete5 || rpm -q concrete5 || concrete5 --version

2. UPGRADE to newer than 5.7.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade concrete5

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade concrete5

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-2015-3989?

concrete5: upgrade to newer than 5.7.3.1. Exact commands for each OS are on this page.

Is CVE-2015-3989 being exploited?

CVE-2015-3989 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-2015-3989 affect?

CVE-2015-3989 affects concrete5. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in concrete5 before 5.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors related to private messages or other unspecified vectors.

How urgent is CVE-2015-3989?

Priority 30/100. No elevated risk signals yet.

Related CVEs

CVE-2017-6908 MEDIUM 6.1 UPGRADE An issue was discovered in concrete5 <= 5.6.3.4
CVE-2017-6905 MEDIUM 6.1 UPGRADE An issue was discovered in concrete5 <= 5.6.3.4
CVE-2015-2250 MEDIUM 4.3 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in concrete5 before 5.7.4 allow remote attackers to inject
CVE-2014-9526 MEDIUM 4.3 UPGRADE DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in concrete5 5.7.2.1, 5.7.2, and earlier allow remote atta
CVE-2014-5108 MEDIUM 4.3 DOWNGRADE DOWNGRADE Cross-site scripting (XSS) vulnerability in single_pages\download_file.php in concrete5 before 5.6.3 allows re

References

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