CVE-2025-46332 Information Disclosure via Flags override link
Attackers can list all feature flags and their values via the discovery endpoint, exposing sensitive configuration details in Vercel Flags SDK.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-46332?
CVE-2025-46332 is a medium-severity vulnerability in vercel flags, published on 2 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Flags SDK is an open-source feature flags toolkit for Next.js and SvelteKit. Impacted versions include flags from 3.2.0 and prior and @vercel/flags from 3.1.1 and prior as certain circumstances allows a bad actor with detailed knowledge of the vulnerability to list all flags returned by the flags discovery endpoint (.well-known/vercel/flags). This vulnerability allows for information disclosure, where a bad actor could gain access to a list of all feature flags exposed through the flags discovery endpoint, including the flag names, flag descriptions, available options and their labels (e.g. true, false), and default flag values. This issue has been patched in [email protected], users of flags and @vercel/flags should also migrate to [email protected].
Weakness: CWE-200
Which versions are affected by CVE-2025-46332?
4 open source packages ship an affected version, including @vercel/flags and flags.
| Package | Affected | Fixed in |
|---|---|---|
@vercel/flags npm | All versions to 3.1.1 | None |
@vercel/flags npm | All versions to 3.1.1 | None |
flags npm | All versions | 4.0.0 |
flags npm | All versions | 4.0.0 |
How do I fix CVE-2025-46332?
Upgrade to a fixed version.
Is CVE-2025-46332 being exploited?
There is no known exploitation of CVE-2025-46332 in the wild and no public exploit code.
Sources
Also known as GHSA-892p-pqrr-hxqr.