How severe is CVE-2012-4001?

CVE-2012-4001 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-4001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4001?

CVE-2012-4001 primarily affects Google Mod Pagespeed. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4001?

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

When was CVE-2012-4001 published?

CVE-2012-4001 was published on 2012-09-15 and last updated on 2026-06-16.

CVE-2012-4001

CVE-2012-4001 is a medium-severity vulnerability in Google Mod Pagespeed with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Google Mod Pagespeed
Published: 2012-09-15
Last modified: 2026-06-16

Description

The mod_pagespeed module before 0.10.22.6 for the Apache HTTP Server does not properly verify its host name, which allows remote attackers to trigger HTTP requests to arbitrary hosts via unspecified vectors, as demonstrated by requests to intranet servers.

Frequently asked questions

What is CVE-2012-4001?: The mod_pagespeed module before 0.10.22.6 for the Apache HTTP Server does not properly verify its host name, which allows remote attackers to trigger HTTP requests to arbitrary hosts via unspecified vectors, as demonstrated by requests to intranet servers.
How severe is CVE-2012-4001?: CVE-2012-4001 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-4001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4001?: CVE-2012-4001 primarily affects Google Mod Pagespeed. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4001 published?: CVE-2012-4001 was published on 2012-09-15 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:google:mod_pagespeed:*:*:*:*:*:*:*:*
cpe:2.3:a:google:mod_pagespeed:0.10.19.1:*:*:*:*:*:*:*

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CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
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Threat intelligence

Threat-intel indicators referencing this CVE:

41.75.114.30 (ipv4-addr)
50.255.62.89 (ipv4-addr)
37.120.213.13 (ipv4-addr)
105.27.148.94 (ipv4-addr)
104.199.176.250 (ipv4-addr)
218.4.91.163 (ipv4-addr)
79.137.34.248 (ipv4-addr)
61.76.112.4 (ipv4-addr)