CVE-2015-6737: Cross-site scripting (XSS) vulnerability in the Widgets extension for MediaWiki allows remote attackers to inj

Routine

MEDIUM 4.3MITIGATE

CVE-2015-6737 is a medium-severity flaw (CVSS 4.3) affecting widgets. 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 Widgets extension for MediaWiki allows remote attackers to inject arbitrary web script or HTML via vectors involving base64 encoded content.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-09-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: widgets project

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

Am I affected?

Timeline

2015-09-01 14:59 UTCPublished CVE record published
2026-06-17 00:31 UTCUpdated Record last modified

widgets project widgets 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 widgets || rpm -q widgets || widgets --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-2015-6737?

widgets: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-6737 being exploited?

CVE-2015-6737 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-2015-6737 affect?

CVE-2015-6737 affects widgets. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Widgets extension for MediaWiki allows remote attackers to inject arbitrary web script or HTML via vectors involving base64 encoded content.

How urgent is CVE-2015-6737?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2020-9382 MEDIUM 5.4 UPGRADE An issue was discovered in the Widgets extension through 1.4.0 for MediaWiki

References

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