CVE-2026-30812: Improper Neutralization of Input During Web Page Generation vulnerability allows Stored Cross-Site Scripting v

Routine

MEDIUM 5.4UPGRADE

CVE-2026-30812 is a medium-severity flaw (CVSS 5.4) affecting pandora fms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation vulnerability allows Stored Cross-Site Scripting via event comments. This issue affects Pandora FMS: from 777 through 800

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-13
Last modified	2026-06-17

Publisher (CNA): Artica PFMS · Vendor: artica

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

Am I affected?

Timeline

2026-04-13 16:16 UTCPublished CVE record published
2026-06-17 10:32 UTCUpdated Record last modified

artica pandora fms UPGRADE

Affected: >= 777 and < 800.1

Fixed in: 800.1

Safe to downgrade to: a release before 777

1. Check installed version

apt-cache policy pandora-fms || rpm -q pandora-fms || pandora-fms --version

2. UPGRADE to 800.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pandora-fms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pandora-fms

Note

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

3. If no update is available yet, DOWNGRADE to a release before 777 (Debian / Ubuntu)

apt-cache madison pandora-fms sudo apt install pandora-fms=<VERSION_BEFORE_777> sudo apt-mark hold pandora-fms

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pandora-fms sudo dnf downgrade pandora-fms-<VERSION_BEFORE_777> sudo dnf versionlock add pandora-fms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-30812?

pandora fms: upgrade to 800.1. Exact commands for each OS are on this page.

Is CVE-2026-30812 being exploited?

CVE-2026-30812 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-2026-30812 affect?

CVE-2026-30812 affects pandora fms. Severity is medium (CVSS 5.4). Improper Neutralization of Input During Web Page Generation vulnerability allows Stored Cross-Site Scripting via event comments. This issue affects Pandora FMS: from 777 through 800

How urgent is CVE-2026-30812?

Priority 21/100. No elevated risk signals yet.

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References

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