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CVE-2011-5277

32
FAUCET Score

CVE-2011-5277 describes multiple SQL injection vulnerabilities in the Advanced Forum Signatures (afsignatures) plugin version 2.0.4 for MyBB. These flaws allow remote, unauthenticated attackers to execute arbitrary SQL commands by manipulating various parameters within the signature.php file. With a CVSS score of 7.5, this vulnerability is considered highly severe, enabling potential compromise of data confidentiality, integrity, and availability. While not listed in CISA KEV, public exploit code is available via ExploitDB, though there is no evidence of widespread active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.4CPE matchmatch criteria
cpe:2.3:a:advanced_forum_signatures_project:advanced_forum_signatures:2.0.4:*:*:*:*:mybb:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-17961 · Oct 10, 2011
This CVE's current EPSS score of 0.0133 is in the 48th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 76295
secunia.com / advisories/46352
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/70473
exploit-db.com / exploits/17961
Exploit
securityfocus.com / bid/50051/info
Exploit