CVE-2012-5223

high

Published 2012-10-01 · 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

8.5

Description

The proc_deutf function in includes/functions_vbseocp_abstract.php in vBSEO 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier allows remote attackers to insert and execute arbitrary PHP code via "complex curly syntax" in the char_repl parameter, which is inserted into a regular expression that is processed by the preg_replace function with the eval switch.

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-18424 webapps php verified

EgiX · 2012-01-27

vBSEO 3.6.0 - 'proc_deutf()' Remote PHP Code Injection (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_multi/http/vbseo_proc_deutf rank 600

vBSEO proc_deutf() Remote PHP Code Injection

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

Application impact

Vendor	Product	Versions
crawlability	vbseo	`{"endIncluding":"3.6.0"}`
crawlability	vbseo	`2.0.0`
crawlability	vbseo	`2.1.0`
crawlability	vbseo	`2.1.1`
crawlability	vbseo	`2.2.0`
crawlability	vbseo	`2.3.0`
crawlability	vbseo	`2.4.0`
crawlability	vbseo	`2.4.5`
crawlability	vbseo	`3.0.0`
crawlability	vbseo	`3.1.0`
crawlability	vbseo	`3.2.0`
crawlability	vbseo	`3.3.0`
crawlability	vbseo	`3.3.1`
crawlability	vbseo	`3.5.0`
crawlability	vbseo	`3.5.1`
crawlability	vbseo	`3.5.2`
crawlability	vbseo	`3.6.0`

References

CWEs

CWE-94

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

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