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CVE-2011-1716· NVD / CVE Program· CNA mitre

Multiple cross-site scripting (XSS) vulnerabilities in the Web UI in Xymon before 4.3.1 allow remote attackers to inject arbitrary web scrip

Multiple cross-site scripting (XSS) vulnerabilities in the Web UI in Xymon before 4.3.1 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

MediumCVSS 4.3 · v2.0—No exploit Fix available
Published
Apr 18, 2011
Updated
Jun 16, 2026
EPSS
1.3% · 70th percentile
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Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Affected systems

VendorProduct
xymonxymon

Affected versions

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

  • xymon xymonall versions
  • xymon xymonup to 4.3.0 inclusive
  • xymon xymon4.0
  • xymon xymon4.0.1
  • xymon xymon4.0.2
  • xymon xymon4.0.3
  • xymon xymon4.0.4
  • xymon xymon4.1.0
  • xymon xymon4.1.1
  • xymon xymon4.1.2
  • xymon xymon4.2.0
  • xymon xymon4.2.2
  • xymon xymon4.2.3
  • xymon xymon4.3.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12xymonbefore 4.3.7-14.3.7-1

Same product

xymon: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-2056xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote authenticated users to execute arbitrary commands via shell metacharacter
    51Plan
  • CVE-2016-2054Multiple buffer overflows in xymond/xymond.c in xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote attackers to execute arbi
    41Plan
  • CVE-2019-13486In Xymon through 4.3.28, a stack-based buffer overflow exists in the status-log viewer component because of   expansion in svcstatus.c.
    40Plan
  • CVE-2019-13485In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the history viewer component via a long hostname or service p
    40Plan
  • CVE-2019-13484In Xymon through 4.3.28, a buffer overflow exists in the status-log viewer CGI because of   expansion in appfeed.c.
    40Plan
  • CVE-2019-13455In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion
    40Plan

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
debian:xymon4.3.7-1 · Debian:12Package registry (OSV)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

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.

No nightly-computed relations.

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

    If successful

    Confidentiality
    none
    Integrity
    P · data or configuration can be modified
    Availability
    none
    Attack complexity
    M
    Confidentiality impact
    None
    Integrity impact
    P
    Availability impact
    None

    Weakness class (CWE)

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

    CVSS vector

    AV:N/AC:M/Au:N/C:N/I:P/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

    —

    Noroxi analysis

    No Noroxi analysis for this record yet

    We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

    We use this product, ask for help

    Change log

    1. Fix✗ → ✓

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    References

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

    All records