CVE-2025-52217: SelectZero Data Observability Platform before 2025.5.2 is vulnerable to HTML Injection

Q: How do I fix CVE-2025-52217?

selectzero: upgrade to 2025.5.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-52217 being exploited?

CVE-2025-52217 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-2025-52217 affect?

CVE-2025-52217 affects selectzero. Severity is medium (CVSS 5.4). SelectZero Data Observability Platform before 2025.5.2 is vulnerable to HTML Injection. Legacy UI fields improperly handle user-supplied input, allowing injection of arbitrary HTML.

Q: How urgent is CVE-2025-52217?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2025-52217 is a medium-severity flaw (CVSS 5.4) affecting selectzero. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SelectZero Data Observability Platform before 2025.5.2 is vulnerable to HTML Injection. Legacy UI fields improperly handle user-supplied input, allowing injection of arbitrary HTML.

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	None
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: selectzero

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

Am I affected?

Timeline

2025-08-26 15:15 UTCPublished CVE record published
2026-06-17 09:36 UTCUpdated Record last modified

selectzero selectzero UPGRADE

Affected: < 2025.5.2

Fixed in: 2025.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2025.5.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade selectzero

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-2025-52217?

selectzero: upgrade to 2025.5.2. Exact commands for each OS are on this page.

Is CVE-2025-52217 being exploited?

CVE-2025-52217 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-2025-52217 affect?

CVE-2025-52217 affects selectzero. Severity is medium (CVSS 5.4). SelectZero Data Observability Platform before 2025.5.2 is vulnerable to HTML Injection. Legacy UI fields improperly handle user-supplied input, allowing injection of arbitrary HTML.

How urgent is CVE-2025-52217?

Priority 21/100. No elevated risk signals yet.

Related CVEs

CVE-2025-52219 MEDIUM 6.5 UPGRADE SelectZero SelectZero Data Observability Platform before 2025.5.2 contains an Open Redirect vulnerability
CVE-2025-52218 HIGH 7.5 UPGRADE SelectZero Data Observability Platform before 2025.5.2 is vulnerable to Content Spoofing / Text Injection

References

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