CVE-2015-6731: Multiple cross-site scripting (XSS) vulnerabilities in the SemanticForms extension for MediaWiki allow remote

Routine

MEDIUM 4.3MITIGATE

CVE-2015-6731 is a medium-severity flaw (CVSS 4.3) affecting semanticforms. 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 the SemanticForms extension for MediaWiki allow remote attackers to inject arbitrary web script or HTML via a (1) section_*, (2) template_*, (3) label_*, or (4) new_template parameter to Special:CreateForm or (5) target or (6) alt_form parameter to Special:FormEdit.

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	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-09-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: semanticforms 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

semanticforms project semanticforms 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 semanticforms || rpm -q semanticforms || semanticforms --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-2015-6731?

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

Is CVE-2015-6731 being exploited?

CVE-2015-6731 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-2015-6731 affect?

CVE-2015-6731 affects semanticforms. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in the SemanticForms extension for MediaWiki allow remote attackers to inject arbitrary web script or HTML via a (1) section_*, (2) template_*, (3) label_*, or (4) new_template parameter t

How urgent is CVE-2015-6731?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2015-6732 MEDIUM 4.3 MITIGATE Multiple cross-site scripting (XSS) vulnerabilities in the SemanticForms extension for MediaWiki allow remote

References

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