CVE-2013-6111: Cross-site scripting (XSS) vulnerability in the mod_pagespeed module 0.x, 1.0.22.7, 1.1.x, 1.24.1, 1.3.25.1 th

Routine

MEDIUM 4.3DOWNGRADE

CVE-2013-6111 is a medium-severity flaw (CVSS 4.3) affecting mod pagespeed. 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 mod_pagespeed module 0.x, 1.0.22.7, 1.1.x, 1.24.1, 1.3.25.1 through 1.3.25.4, 1.4.26.1 through 1.4.26.4, 1.5.27.1 through 1.5.27.3, and 1.6.29.1 through 1.6.29.6 for the Apache HTTP Server allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

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	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2013-11-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: modpagespeed

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-11-02 21:55 UTCPublished CVE record published
2026-06-16 23:59 UTCUpdated Record last modified

modpagespeed mod pagespeed DOWNGRADE

Affected: 0.9.1.1-171 · 0.9.8.1-215 · 0.9.8.1-250 · 0.9.11.5 · 0.9.14.6 · 0.9.15.3 · 0.9.16.3 · 0.9.16.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.1.1-171

1. Check installed version

apt-cache policy mod-pagespeed || rpm -q mod-pagespeed || mod-pagespeed --version

2. No fixed release: DOWNGRADE to a release before 0.9.1.1-171 (Debian / Ubuntu)

apt-cache madison mod-pagespeed sudo apt install mod-pagespeed=<VERSION_BEFORE_0.9.1.1-171> sudo apt-mark hold mod-pagespeed

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mod-pagespeed sudo dnf downgrade mod-pagespeed-<VERSION_BEFORE_0.9.1.1-171> sudo dnf versionlock add mod-pagespeed

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2013-6111?

mod pagespeed: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-6111 being exploited?

CVE-2013-6111 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-2013-6111 affect?

CVE-2013-6111 affects mod pagespeed. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the mod_pagespeed module 0.x, 1.0.22.7, 1.1.x, 1.24.1, 1.3.25.1 through 1.3.25.4, 1.4.26.1 through 1.4.26.4, 1.5.27.1 through 1.5.27.3, and 1.6.29.1 through 1.6.29.6 for the Apache HTTP Server all

How urgent is CVE-2013-6111?

Priority 32/100. No elevated risk signals yet.

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2012-4360 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in the mod_pagespeed module 0.10.19.1 through 0.10.22.4 for the Apach
CVE-2012-4001 MEDIUM 5.0 UPGRADE The mod_pagespeed module before 0.10.22.6 for the Apache HTTP Server does not properly verify its host name, w

References

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