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NVD / CVE Program· CNA qnap

CVE-2023-23372: A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions.

Noroxi assessment

Priority: Monitor (action score 24/100)

  • 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: 0.45% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

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

A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to inject malicious code via a network. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QTS 4.5.4.2467 build 20230718 and later QuTS hero h5.1.0.2424 build 20230609 and later QuTS hero h5.0.1.2515 build 20230907 and later QuTS hero h4.5.4.2476 build 20230728 and later

MediumCVSS 6.1 · v3.1—No exploit No fix recorded
Published
Dec 8, 2023
Updated
Jun 17, 2026
EPSS
0.4% · 39th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CNA vs NVD score

NVD
6.1
CNA · qnap
6.5
0.4 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A: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
  • No fixed version yet

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

Follow CVE-2023-23372

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.

VendorProduct
qnapqts
qnapquts hero

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

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • qnap qts4.5.4.1715
  • qnap qts4.5.4.1723
  • qnap qts4.5.4.1741
  • qnap qts4.5.4.1787
  • qnap qts4.5.4.1800
  • qnap qts4.5.4.1892
  • qnap qts4.5.4.1931
  • qnap qts4.5.4.2012
  • qnap qts4.5.4.2117
  • qnap qts4.5.4.2280
  • qnap qts4.5.4.2374
  • qnap qts5.0.1.2034
  • qnap qts5.0.1.2079
  • qnap qts5.0.1.2131
  • qnap qts5.0.1.2137
  • qnap qts5.0.1.2145
  • qnap qts5.0.1.2173
  • qnap qts5.0.1.2194
  • qnap qts5.0.1.2234
  • qnap qts5.0.1.2248

Versions reported by the vendor

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

  • QNAP Systems Inc. QTS

    • 5.0.x and later · before 5.0.1.2425 build 20230609affected
    • 5.1.x and later · before 5.1.0.2444 build 20230629affected
    • 4.5.x and later · before 4.5.4.2467 build 20230718affected

  • QNAP Systems Inc. QuTS hero

    • h5.1.x and later · before h5.1.0.2424 build 20230609affected
    • h5.0.x and later · before h5.0.1.2515 build 20230907affected
    • h4.5.x and later · before h4.5.4.2476 build 20230728affected

Same product

qnap: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-2509Command Injection Vulnerability in QTS and QuTS heroKEV
    79This week
  • CVE-2018-19949If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands.KEV
    78This week
  • CVE-2019-7193This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system.KEV
    73This week

Published before and after this one in the same product

  • ← EarlierCVE-2023-39301Nov 3, 2023 · QTS, QuTS hero, QuTScloud
    17Monitor
  • ← EarlierCVE-2023-23367Nov 10, 2023 · QTS, QuTS hero, QuTScloud
    28Monitor
  • Later →CVE-2023-32968Dec 8, 2023 · A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
    28Monitor

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-21897273 days apartA cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions.
    21Monitor
  • CVE-2023-3296991 days apartNetwork & Virtual Switch
    19Monitor
  • CVE-2023-50366273 days apartA cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions.
    19Monitor

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd-primary

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

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

All records