How severe is CVE-2026-76089?

CVE-2026-76089 has a CVSS score of 7.7/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2026-76089?

CVE-2026-76089 affects the following packages: verbb/formie (Packagist), verbb/formie (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-76089?

Update verbb/formie to 3.1.31 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-76089 is resolved across your whole dependency graph.

How do I detect CVE-2026-76089 in my Packagist dependencies?

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

How do I mitigate CVE-2026-76089 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is CVE-2026-76089 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-76089 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-76089?

CVE-2026-76089 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 14th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-76089?

CVE-2026-76089 is classified as Information Exposure (CWE-200), CWE-639 (CWE-639), CWE-862 (CWE-862). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-76089 published, and has it been updated?

CVE-2026-76089 was published on September 23, 2026 and was last updated on October 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

HIGH severity

CVE-2026-76089 — formie

HIGHFix: verbb/formie@9f4e23c

CVE-2026-76089 is a high-severity (CVSS 7.7) Information Exposure vulnerability in verbb/formie. A fix is available for verbb/formie — see the affected versions and patch details below.

Formie: Missing authorization on sent notification resend modal exposes submission PII

Also known asGHSA-9rg8-2wvr-fgjh

Published

Sep 23, 2026

Updated

Oct 21, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Oct 22, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-76089.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs14th percentile — riskier than 14% of all scored CVEsHighest risk

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

How urgent is this, really

CVE-2026-76089 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected

🐘verbb/formie🐘verbb/formie

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

Impact

The control panel action formie/sent-notifications/get-resend-modal-content (SentNotificationsController::actionGetResendModalContent) performed only requireAcceptsJson() and loaded a SentNotification by request id without permission or object-level authorization checks.

Any authenticated user who could invoke the action could enumerate notification IDs and read full email content — including recipient headers and the complete HTML body containing submitted form data (PII) — without formie-accessSentNotifications or equivalent permission. Sibling actions in the same controller enforced authorization.

Patches

Fixed in 3.1.31 (Craft 5) and 2.2.23 (Craft 4).

Craft 5: canView() is enforced after loading, consistent with actionEdit.
Craft 4: formie-viewSentNotifications permission is required.

Workarounds

Restrict CP access to trusted users only until upgraded. No configuration workaround.

Reported by Jorge González ([email protected])

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`verbb/formie`	≥ 3.0.0&&< 3.1.31	3.1.31`composer require verbb/formie:^3.1.31`
🐘Packagist	`verbb/formie`	all versions	2.2.23`composer require verbb/formie:^2.2.23`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for verbb/formie, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update verbb/formie to 3.1.31 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-76089 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

### Impact The control panel action `formie/sent-notifications/get-resend-modal-content` (`SentNotificationsController::actionGetResendModalContent`) performed only `requireAcceptsJson()` and loaded a `SentNotification` by request `id` without permission or object-level authorization checks. Any authenticated user who could invoke the action could enumerate notification IDs and read full email content — including recipient headers and the complete HTML body containing submitted form data (PII) — without `formie-accessSentNotifications` or equivalent permission. Sibling actions in the same co