CVE-2026-23900: Various stored XSS vulnerabilities in the maps- and icon rendering logic in Phoca Maps component 5.0.0-6.0.2 h

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-23900 is a medium-severity flaw (CVSS 6.5) affecting maps. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Various stored XSS vulnerabilities in the maps- and icon rendering logic in Phoca Maps component 5.0.0-6.0.2 have been discovered.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-11
Last modified	2026-10-26

Publisher (CNA): Joomla! Project · Vendor: phoca

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-11 14:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

phoca maps UPGRADE

Affected: >= 5.0.0 and <= 6.0.2

Fixed in: newer than 6.0.2

Safe to downgrade to: a release before 5.0.0

1. Check installed version

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

2. UPGRADE to newer than 6.0.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade maps

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 5.0.0 (Debian / Ubuntu)

apt-cache madison maps sudo apt install maps=<VERSION_BEFORE_5.0.0> sudo apt-mark hold maps

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

dnf --showduplicates list maps sudo dnf downgrade maps-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add maps

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-2026-23900?

maps: upgrade to newer than 6.0.2. Exact commands for each OS are on this page.

Is CVE-2026-23900 being exploited?

CVE-2026-23900 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-2026-23900 affect?

CVE-2026-23900 affects maps. Severity is medium (CVSS 6.5). Various stored XSS vulnerabilities in the maps- and icon rendering logic in Phoca Maps component 5.0.0-6.0.2 have been discovered.

How urgent is CVE-2026-23900?

Priority 32/100. Remotely exploitable, no login, no user action

References

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