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Fencer Intel
high 7.5

CVE-2011-5277 json

Multiple SQL injection vulnerabilities in signature.php in the Advanced Forum Signatures (aka afsignatures) plugin 2.0.4 for MyBB allow rem…

published 2014-04-08 12 y ago modified 2026-06-16 4 mo ago also EUVD-2011-5176

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
1
Exploit-DB

Summary

Multiple SQL injection vulnerabilities in signature.php in the Advanced Forum Signatures (aka afsignatures) plugin 2.0.4 for MyBB allow remote attackers to execute arbitrary SQL commands via the (1) afs_type, (2) afs_background, (3) afs_showonline, (4) afs_bar_left, (5) afs_bar_center, (6) afs_full_line1, (7) afs_full_line2, (8) afs_full_line3, (9) afs_full_line4, (10) afs_full_line5, or (11) afs_full_line6 parameter. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Timeline

  1. First public exploit (EDB-17961)
  2. Published

Exploit prediction

1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-17961 MyBB Advanced Forum Signatures - 'afsignatures-2.0.4' SQL Injection webapps, 2011-10-10
  • securityfocus.com http://www.securityfocus.com/bid/50051/info referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.