CVE-2011-4451

medium

Published 2012-09-05 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.3

Description

libs/Wakka.class.php in WikkaWiki 1.3.1 and 1.3.2, when the spam_logging option is enabled, allows remote attackers to write arbitrary PHP code to the spamlog_path file via the User-Agent HTTP header in an addcomment request. NOTE: the vendor disputes this issue because the rendering of the spamlog_path file never uses the PHP interpreter

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-18177 webapps php

EgiX · 2011-11-30

WikkaWiki 1.3.2 - Multiple Vulnerabilities

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_multi/http/wikka_spam_exec rank 600

WikkaWiki 1.3.2 Spam Logging PHP Injection

Source fetch failed: fetch_error — view the original via the link above.

Application impact

Vendor	Product	Versions	Fixed
wikkawiki	wikkawiki	`1.3.1`
wikkawiki	wikkawiki	`1.3.2`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.