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NVD / CVE Program· CNA VulnCheck

CVE-2026-48221: Open ISES Tickets < 3.44.2 Reflected XSS via ics205a.php frm_add_str Parameter

Noroxi assessment

Priority: Monitor (action score 20/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No special conditions are required; it is repeatable.
  • Fixed version: Open ISES Tickets 3.44.2.

Low priority for now. Upgrade to Open ISES Tickets 3.44.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Open ISES Tickets before 3.44.2 contains a reflected cross-site scripting vulnerability in ics205a.php that allows authenticated attackers to inject arbitrary JavaScript by passing an unsanitized value through the frm_add_str POST parameter directly into an HTML form hidden input value attribute. Attackers can craft a malicious request containing a JavaScript payload that executes in the victim's browser when the response is rendered.

MediumCVSS 5.1 · v4.0—No exploit Fix available
Published
May 21, 2026
Updated
Jul 28, 2026
EPSS
0.2% · 11th percentile

Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
5.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-48221

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Limit the impact of XSS

This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.

Check security headers

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • Open ISES Tickets

    • before 3.44.2affected · semver

Same product

open ises: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-48242Open ISES Tickets < 3.44.2 Hardcoded MySQL Database Credentials in import_mdb.php
    36Monitor
  • CVE-2026-48241Open ISES Tickets < 3.44.2 Hardcoded MySQL Database Credentials in loader.php
    36Monitor
  • CVE-2026-48235Open ISES Tickets < 3.44.2 SQL Injection in incs/remotes.inc.php via External GPS Tracker Data
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-48219May 21, 2026 · Open ISES Tickets < 3.44.2 Reflected XSS via ics202.php frm_add_str Parameter
    20Monitor
  • ← EarlierCVE-2026-48220May 21, 2026 · Open ISES Tickets < 3.44.2 Reflected XSS via ics205.php frm_add_str Parameter
    20Monitor
  • Later →CVE-2026-48222May 21, 2026 · Open ISES Tickets < 3.44.2 Reflected XSS via ics213.php frm_add_str Parameter
    20Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Open ISES Tickets3.44.2Vendor (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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

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.

  • CVE-2026-482140 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via add_nm.php ticket_id Parameter
    20Monitor
  • CVE-2026-482150 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via circle.php frm_id Parameter
    20Monitor
  • CVE-2026-482160 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via db_loader.php Multiple POST Parameters
    20Monitor
  • CVE-2026-482170 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via delete_module.php Multiple POST Parameters
    20Monitor
  • CVE-2026-482180 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via icons/buttons/landb.php frm_name and frm_id Parameters
    20Monitor
  • CVE-2026-482260 days apartOpen ISES Tickets < 3.44.2 Reflected XSS via os_watch.php ref and mode_orig Parameters
    20Monitor

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.
  • No account or password is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
A
Scope
X

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

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

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

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

—

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

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

All records