How severe is CVE-2011-3863?

CVE-2011-3863 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-3863 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3863?

CVE-2011-3863 primarily affects Post-scriptum Redline. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3863?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3863 published?

CVE-2011-3863 was published on 2011-09-28 and last updated on 2026-06-16.

CVE-2011-3863

CVE-2011-3863 is a medium-severity vulnerability in Post-scriptum Redline with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Post-scriptum Redline
Published: 2011-09-28
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the RedLine theme before 1.66 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.

Frequently asked questions

What is CVE-2011-3863?: Cross-site scripting (XSS) vulnerability in the RedLine theme before 1.66 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.
How severe is CVE-2011-3863?: CVE-2011-3863 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-3863 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3863?: CVE-2011-3863 primarily affects Post-scriptum Redline. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3863?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3863 published?: CVE-2011-3863 was published on 2011-09-28 and last updated on 2026-06-16.

References

https://sitewat.ch/en/Advisories/22

Affected products (25)

cpe:2.3:a:post-scriptum:redline:*:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.3:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.5:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.6:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.7:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.2.9:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.3:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.5:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.5.5:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.7:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.7.5:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.8:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.85:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:0.90:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.0:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.1:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.2:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.5:*:*:*:*:*:*:*
cpe:2.3:a:post-scriptum:redline:1.6:*:*:*:*:*:*:*

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Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

103.253.245.96 (ipv4-addr)
47.251.12.114 (ipv4-addr)
64.202.190.35 (ipv4-addr)
45.56.218.235 (ipv4-addr)