# CVE-2026-43510: CISA manage.get.gov Incorrect Privilege Assignment in Portfolio Management

Source: https://junglewise.ai/threats/cve-2026-43510-cisa-manage-get-gov-incorrect-privilege-assignment-in-portfolio  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-07. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2026-43510 · Severity: medium · CVSS 5.9 · Published 2026-05-07

The .gov domain registrar, managed by CISA, contained a security flaw that could allow an organization administrator to gain control over domains belonging to a different organization. By exploiting a lack of validation in the domain assignment process, an administrator could grant themselves or others management privileges for domains they do not own. This could lead to unauthorized changes to government domain settings and a breach of isolation between different government agencies.

Vendors: [CISA](https://junglewise.ai/threats/vendors/cisa).

## Quick answers

**Is CVE-2026-43510 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43510 being exploited in the wild.

**How severe is CVE-2026-43510?** Medium severity, with a CVSS score of 5.9, published 7 May 2026.

**Which products and versions are affected?** CISA Manage.Get.Gov 1.92.0 to 1.175.0.

**Is there a fix for CVE-2026-43510?** A patch was published on 2026-04-24: Fix merged into main branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-43510 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-43510?** Check whether you run CISA Manage.Get.Gov at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A privilege escalation vulnerability exists in the manage.get.gov registrar platform due to missing portfolio validation in the domain assignment logic. Specifically, the '_process_added_domains' method in 'registrar/views/portfolios.py' retrieves domains by ID without verifying that the domain's 'portfolio_id' matches the administrator's portfolio. An authenticated portfolio administrator can exploit this by submitting domain IDs belonging to other organizations, effectively granting 'Domain Manager' roles to users across portfolio boundaries. This breaks the intended isolation between different government entities. The issue was resolved in version 1.176.0 by implementing explicit ownership checks during the assignment process.

## Affected products

- CISA manage.get.gov 1.92.0 to 1.175.0

## Timeline

- 2026-03-31: other: Issue first identified internally
- 2026-04-24: patched: Fix merged into main branch
- 2026-04-30: patched: Version 1.176.0 released
- 2026-05-07: disclosed: Security advisory published

## References

- [https://github.com/cisagov/manage.get.gov/issues/4858](https://github.com/cisagov/manage.get.gov/issues/4858)
- [https://github.com/cisagov/manage.get.gov/pull/4900](https://github.com/cisagov/manage.get.gov/pull/4900)
- [https://github.com/cisagov/manage.get.gov/releases/tag/v1.176.0](https://github.com/cisagov/manage.get.gov/releases/tag/v1.176.0)
- [https://github.com/cisagov/manage.get.gov/security/advisories/GHSA-6wrg-x3j6-x464](https://github.com/cisagov/manage.get.gov/security/advisories/GHSA-6wrg-x3j6-x464)
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-121-01.json](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-121-01.json)
- [https://www.cve.org/CVERecord?id=CVE-2026-43510](https://www.cve.org/CVERecord?id=CVE-2026-43510)
- [https://www.first.org/cvss/calculator/4.0](https://www.first.org/cvss/calculator/4.0)