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CVE-2011-4559· NVD / CVE Program· CNA mitre

SQL injection vulnerability in the Calendar module in vTiger CRM 5.2.1 and earlier allows remote attackers to execute arbitrary SQL commands

SQL injection vulnerability in the Calendar module in vTiger CRM 5.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the onlyforuser parameter in an index action to index.php.

HighCVSS 7.5 · v2.0—Proof of concept No fix recorded
Published
Nov 28, 2011
Updated
Jun 16, 2026
EPSS
1.3% · 70th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Affected systems

VendorProduct
vtigervtiger crm

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • vtiger vtiger crmup to 5.2.1 inclusive
  • vtiger vtiger crm1.0
  • vtiger vtiger crm2.0
  • vtiger vtiger crm2.0.1
  • vtiger vtiger crm2.1
  • vtiger vtiger crm3.0
  • vtiger vtiger crm3.2
  • vtiger vtiger crm4.0
  • vtiger vtiger crm4.0.1
  • vtiger vtiger crm4.2
  • vtiger vtiger crm4.2.4
  • vtiger vtiger crm5.0.2
  • vtiger vtiger crm5.0.3
  • vtiger vtiger crm5.0.4
  • vtiger vtiger crm5.1.0
  • vtiger vtiger crm5.2.0

Same product

vtiger: all records

Other highest-scoring records for the same primary product.

  • CVE-2013-3214vtiger CRM 5.4.0 and earlier contain a PHP Code Injection Vulnerability in 'vtigerolservice.php'.
    64This week
  • CVE-2013-3215vtiger CRM 5.4.0 and earlier contain an Authentication Bypass Vulnerability due to improper authentication validation in the validateSession
    60This week
  • CVE-2013-3591vTiger CRM 5.3 and 5.4: 'files' Upload Folder Arbitrary PHP Code Execution Vulnerability
    48Plan
  • CVE-2015-6000Unrestricted file upload vulnerability in the Settings_Vtiger_CompanyDetailsSave_Action class in modules/Settings/Vtiger/actions/CompanyDeta
    47Plan
  • CVE-2020-22807An issue was dicovered in vtiger crm 7.2.
    39Monitor
  • CVE-2009-3250The saveForwardAttachments procedure in the Compose Mail functionality in vtiger CRM 5.0.4 allows remote authenticated users to execute arbi
    39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2011-10-15

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-45 d
  2. Published
  3. TodaySep 30, 2026+5420 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSS vector

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

nvd-primary

Root cause

The query text is built by concatenating user input. The database cannot tell where the data ends and the command begins.

The bug in code

The whole CWE-89 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const owner = req.query.owner;const rows = await db.query(  "SELECT * FROM files WHERE owner = '" + owner + "'");

Fixed

ts
const owner = req.query.owner;const rows = await db.query(  "SELECT * FROM files WHERE owner = $1",  [owner]);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records