Permission policy information leakage in Backstage permission system
A vulnerability in the Backstage permission plugin backend allows callers to extract some information about the conditional decisions returned by the permission policy installed in the permission backend. If the permission system is not in use or if the installed permission policy does not use conditional decisions, there is no impact.
This issue has been resolved in version 0.6.0 of the permissions backend.
Administrators of the permission policies can ensure that they are crafted in such a way that conditional decisions do not contain any sensitive information.
If you have any questions or comments about this advisory:
Open an issue in the [Backstage repository](https://github.com/backstage/backstage)
Visit our Discord, linked to in [Backstage README](https://github.com/backstage/backstage)
This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.
The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVE-2025-32791 is classified as CWE-213: Exposure of Sensitive Information Due to Incompatible Policies. The product's intended functionality exposes information to certain actors in accordance with the developer's security policy, but this information is regarded as sensitive according to the intended security policies of other stakeholders such as…
CVE-2025-32791 is recorded against 2 packages.
Published on 16 April 2025 and last revised on 17 April 2025. No public exploit is currently recorded for this entry. Record sourced from NVD.
github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
These advisories are the same class of weakness (CWE-213: Exposure of Sensitive Information Due to Incompatible Policies) in other software:
Details
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| @backstage/plugin-permission-backend | — | — |
| unknown | — | — |
References
Vulnerability Monitoring
CVE-2025-32791 is rated CVSS 4.3 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.
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