CVE-2019-25294: html5_snmp 1.11 contains a persistent cross-site scripting vulnerability that allows attackers to inject malic

Routine

MEDIUM 6.1MITIGATE

CVE-2019-25294 is a medium-severity flaw (CVSS 6.1) affecting html5 snmp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

html5_snmp 1.11 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts through the 'Remark' parameter in add_router_operation.php. Attackers can craft a POST request with a script payload in the Remark field to execute arbitrary JavaScript in victim browsers when the page is loaded.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-06
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: lolypop55

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-06 17:16 UTCPublished CVE record published
2026-06-17 02:31 UTCUpdated Record last modified

lolypop55 html5 snmp MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy html5-snmp || rpm -q html5-snmp || html5-snmp --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-25294?

html5 snmp: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-25294 being exploited?

CVE-2019-25294 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-25294 affect?

CVE-2019-25294 affects html5 snmp. Severity is medium (CVSS 6.1). html5_snmp 1.11 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts through the 'Remark' parameter in add_router_operation.php. Attackers can craft a POST request with a script payload

How urgent is CVE-2019-25294?

Priority 30/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-25298 CRITICAL 9.1 MITIGATE html5_snmp 1.11 contains multiple SQL injection vulnerabilities that allow attackers to manipulate database qu

References

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