WordPress Post SMTP plugin <= 2.9.9 - SQL Injection vulnerability
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Saad Iqbal Post SMTP post-smtp allows Blind SQL Injection.This issue affects Post SMTP: from n/a through <= 2.9.9.
- Published
- Nov 18, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-89
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.2 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.2
- CNA · Patchstack
- 7.6
- 0.4 point gap
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| wpexperts | post smtp | cpe:2.3:a:wpexperts:post_smtp |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- wpexperts post smtpup to 2.9.9 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.
Saad Iqbal Post SMTP
- up to and including 2.9.9affectedfixed in 2.9.10
Same product
wpexperts: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-6875POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Authorization Bypass via type connect-app API66This week
- CVE-2023-52233WordPress POST SMTP Mailer plugin <= 2.8.6 - Broken Access Control on API vulnerability39Monitor
- CVE-2025-22800WordPress Post SMTP plugin <= 2.9.11 - Broken Access Control vulnerability35Monitor
- CVE-2023-3179POST SMTP Mailer < 2.5.7 - Account Takeover via CSRF35Monitor
- CVE-2023-6620Post SMTP < 2.8.7 - Admin+ SQL Injection32Monitor
- CVE-2026-48838WordPress Post SMTP plugin <= 3.6.2 - Cross Site Scripting (XSS) vulnerability28Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Saad Iqbal Post SMTP | 2.9.10 | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
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 researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- HakiduckPatchstack Bug Bounty Programfinder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-6620308 days apartPost SMTP < 2.8.7 - Admin+ SQL Injection32Monitor
- CVE-2024-5207172 days apartPOST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.9.3 - Authenticated (Administrator+) SQL Injection28Monitor
- CVE-2024-13844110 days apartPost SMTP <= 3.1.2 - Authenticated (Administrator+) SQL Injection via columns Parameter19Monitor
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
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const owner = req.query.owner;const rows = await db.query( "SELECT * FROM files WHERE owner = '" + owner + "'");Fixed
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.
Attack patterns (CAPEC)
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Expanding Control over the Operating System from the DatabaseCAPEC-470Very High
- SQL InjectionCAPEC-66likelihood: High · High
- Blind SQL InjectionCAPEC-7likelihood: High · High
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 helpChange log
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.