CVE-2021-26716: Modules/input/Views/schedule.php in Emoncms through 10.2.7 allows XSS via the node parameter.

Q: How do I fix CVE-2021-26716?

emoncms: upgrade to newer than 10.2.7. Exact commands for each OS are on this page.

Q: Is CVE-2021-26716 being exploited?

CVE-2021-26716 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-26716 affect?

CVE-2021-26716 affects emoncms. Severity is medium (CVSS 6.1). Modules/input/Views/schedule.php in Emoncms through 10.2.7 allows XSS via the node parameter.

Q: How urgent is CVE-2021-26716?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-26716 is a medium-severity flaw (CVSS 6.1) affecting emoncms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Modules/input/Views/schedule.php in Emoncms through 10.2.7 allows XSS via the node parameter.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-02-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openenergymonitor

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

Am I affected?

Timeline

2021-02-21 06:15 UTCPublished CVE record published
2026-06-17 03:43 UTCUpdated Record last modified

openenergymonitor emoncms UPGRADE

Affected: <= 10.2.7

Fixed in: newer than 10.2.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy emoncms || rpm -q emoncms || emoncms --version

2. UPGRADE to newer than 10.2.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade emoncms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade emoncms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-26716?

emoncms: upgrade to newer than 10.2.7. Exact commands for each OS are on this page.

Is CVE-2021-26716 being exploited?

CVE-2021-26716 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-2021-26716 affect?

CVE-2021-26716 affects emoncms. Severity is medium (CVSS 6.1). Modules/input/Views/schedule.php in Emoncms through 10.2.7 allows XSS via the node parameter.

How urgent is CVE-2021-26716?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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