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Not in CISA KEV
MEDIUM severity

FeehiCMS is vulnerable to reverse tabnabbingGHSA-w756-rf26-7rmr

MEDIUM

GHSA-w756-rf26-7rmr is a medium-severity (CVSS 4.6) CWE-1021 vulnerability in feehi/feehicms. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2025-63522
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-w756-rf26-7rmr.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs11th percentile — riskier than 11% of all scored CVEsHighest risk
0.00%0.24%0.47%0.71%0.0%0.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘feehi/feehicms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Reverse Tabnabbing vulnerability in FeehiCMS 2.1.1 in the Comments Management function

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistfeehi/feehicmsall versionsNo fix

Affected Products

1 product · 1 configurations
Application
feehicmsfeehi
1 version
2.1.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for feehi/feehicms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of feehi/feehicms for GHSA-w756-rf26-7rmr. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Reverse Tabnabbing vulnerability in FeehiCMS 2.1.1 in the Comments Management function
O3 Security · Impact-Aware SCA

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FeehiCMS is vulnerable to reverse tabnabbing (Medium 4.6)