CVE-2024-2596
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedVulnerability in AMSS++ version 4.31, which does not sufficiently encode user-controlled input, resulting in a Cross-Site Scripting (XSS) vulnerability through /amssplus/modules/mail/main/select_send.php, in multiple parameters. This vulnerability could allow a remote attacker to send a specially crafted URL to an authenticated user and steal their session cookie credentials.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA reflected Cross-Site Scripting (XSS) vulnerability exists in AMSS++ version 4.31 within the /amssplus/modules/mail/main/select_send.php script. Multiple parameters do not properly encode user-controlled input, allowing a remote attacker to inject malicious JavaScript through a crafted URL. When an authenticated user visits this URL, the attacker can steal their session cookie credentials.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 4.31CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm AMSS++ installationSearch the web root directory for AMSS++ files or check for the existence of the /amssplus/ directory structureAffected if No AMSS++ installation found means not affected
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Verify installed version is 4.31Check version file or header files in the AMSS++ installation for version number. Common locations include version.php, about.php, or the main index fileAffected if Installed version is exactly 4.31 - this is the only affected version per the CVE
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Locate the affected scriptVerify the presence of /amssplus/modules/mail/main/select_send.php in the web directoryAffected if The file select_send.php exists in the mail module path
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Confirm mail module is accessibleCheck if the mail module is enabled and accessible to authenticated users in the AMSS++ admin panel or module configurationAffected if Mail module is enabled and accessible to users
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Check authentication mechanismVerify that user authentication (login functionality) is configured and operational for the AMSS++ applicationAffected if User authentication is enabled - exploit requires authenticated user to visit crafted URL
You are affected if AMSS++ version 4.31 is installed, the mail module is enabled, and user authentication is active, with the vulnerable select_send.php script present in the /amssplus/modules/mail/main/ path.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper input validation and output encoding for all user-controlled parameters in select_send.php. Additionally, configure the application to set HttpOnly flags on session cookies to prevent XSS-based cookie theft.
- Consultation2.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,744.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-2596 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-2596 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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