CVE-2025-71279: XenForo before 2.3.7 contains a security issue affecting Passkeys that have been added to user accounts

Q: How do I fix CVE-2025-71279?

xenforo: upgrade to 2.3.7. Exact commands for each OS are on this page.

Q: Is CVE-2025-71279 being exploited?

CVE-2025-71279 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-2025-71279 affect?

CVE-2025-71279 affects xenforo. Severity is critical (CVSS 9.8). XenForo before 2.3.7 contains a security issue affecting Passkeys that have been added to user accounts. An attacker may be able to compromise the security of Passkey-based authentication.

Q: How urgent is CVE-2025-71279?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-71279 is a critical-severity flaw (CVSS 9.8) affecting xenforo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XenForo before 2.3.7 contains a security issue affecting Passkeys that have been added to user accounts. An attacker may be able to compromise the security of Passkey-based authentication.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-04-01
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: xenforo

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

Am I affected?

Timeline

2026-04-01 01:16 UTCPublished CVE record published
2026-06-17 10:03 UTCUpdated Record last modified

xenforo xenforo UPGRADE

Affected: < 2.3.7

Fixed in: 2.3.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.3.7 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xenforo

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-2025-71279?

xenforo: upgrade to 2.3.7. Exact commands for each OS are on this page.

Is CVE-2025-71279 being exploited?

CVE-2025-71279 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-2025-71279 affect?

CVE-2025-71279 affects xenforo. Severity is critical (CVSS 9.8). XenForo before 2.3.7 contains a security issue affecting Passkeys that have been added to user accounts. An attacker may be able to compromise the security of Passkey-based authentication.

How urgent is CVE-2025-71279?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

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References

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