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CVE-2014-2853

CVE-2014-2853 is a Cross-site Scripting (XSS) vulnerability in mediawiki mediawiki. O3 Security detects and blocks CVE-2014-2853 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

Cross-site scripting (XSS) vulnerability in includes/actions/InfoAction.php in MediaWiki before 1.21.9 and 1.22.x before 1.22.6 allows remote attackers to inject arbitrary web script…

Published
Apr 29, 2014
Updated
Jun 17, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

Cross-site scripting (XSS) vulnerability in includes/actions/InfoAction.php in MediaWiki before 1.21.9 and 1.22.x before 1.22.6 allows remote attackers to inject arbitrary web script or HTML via the sort key in an info action.

Affected Products

1 product · 193 configurations
Application
mediawikimediawiki
≤ 1.21.8
161 versions
1.1.01.2.01.2.11.2.21.2.31.2.41.2.51.2.61.31.3.01.3.11.3.2

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every mediawiki mediawiki deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2014-2853 yet — track the mediawiki mediawiki advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2014-2853 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2014-2853. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Cross-site scripting (XSS) vulnerability in includes/actions/InfoAction.php in MediaWiki before 1.21.9 and 1.22.x before 1.22.6 allows remote attackers to inject arbitrary web script or HTML via the sort key in an info action.
O3 Security · Runtime Protection

Is CVE-2014-2853 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2014-2853 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.