Which versions of PHP are affected by CVE-2026-5961?

CVE-2026-5961 is a critical SQL injection vulnerability in Simple IT Discussion Forum 1.0 that allows unauthenticated attackers to execute arbitrary database queries through the /topic-details.php…

Is there a public PoC exploit available for CVE-2026-5961?

Yes, a public proof-of-concept exploit is available for CVE-2026-5961. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-5961?

Within 24 hours: Immediately take Simple IT Discussion Forum 1.0 instances offline or restrict network access to /topic-details.php pending remediation. Within 7 days: Contact the vendor for patch availability and timeline; if no patch is forthcoming, evaluate replacement forum solutions. Within 30 days: If vendor patch is released, deploy to all affected instances after testing in non-production environments. If no patch emerges, migrate to an alternative, actively-maintained forum platform and decommission Simple IT Discussion Forum 1.0.

PHP CVE-2026-5961

Q: What is the CVSS score of CVE-2026-5961?

CVE-2026-5961 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

EUVD-2026-20958 MEDIUM

SQL Injection (CWE-89)

2026-04-09 VulDB

GHSA-x36w-qv4x-x987

PHP SQLi

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

PoC Detected

Apr 09, 2026 - 17:16 vuln.today

Public exploit code

EUVD ID Assigned

Apr 09, 2026 - 16:30 euvd

EUVD-2026-20958

Analysis Generated

Apr 09, 2026 - 16:30 vuln.today

CVE Published

Apr 09, 2026 - 16:15 nvd

MEDIUM 6.9

DescriptionCVE.org

A security vulnerability has been detected in code-projects Simple IT Discussion Forum 1.0. This vulnerability affects unknown code of the file /topic-details.php. The manipulation of the argument post_id leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

SQL injection in code-projects Simple IT Discussion Forum 1.0 allows unauthenticated remote attackers to execute arbitrary SQL queries via the post_id parameter in /topic-details.php. Successful exploitation enables unauthorized database access, data manipulation, and potential information disclosure. …

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Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
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Vulnerability AssessmentAI

Risk Assessment	Network-accessible SQL injection in unauthenticated forum software with moderate severity (CVSS 7.3). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Attacker sends crafted HTTP request to /topic-details.php with malicious SQL payload in post_id parameter. Unauthenticated remote exploitation extracts sensitive data, modifies database contents, or denies service. …
Remediation	No vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Immediately take Simple IT Discussion Forum 1.0 instances offline or restrict network access to /topic-details.php pending remediation. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-5961 vulnerability details – vuln.today

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PHP CVE-2026-5961

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Vulnerability AssessmentAI

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External POC / Exploit Code