# Halo vulnerabilities

Source: https://junglewise.ai/threats/technologies/halo  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/halo.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 8 vulnerabilities in Halo: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-91772, was published on 15 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 2
- All time: 8 (0 critical, 0 exploited in the wild)

## About Halo

Halo is an open-source, modern content management system and blogging platform built on Java.

## Latest Halo vulnerabilities

- [CVE-2026-91772: Halo open redirect vulnerability in thumbnail endpoint](https://junglewise.ai/threats/cve-2026-91772-halo-open-redirect-vulnerability-in-thumbnail-endpoint) (medium, CVSS 6.1, published 15 Sep 2026)
- [CVE-2026-78971: Halo CMS plugin management arbitrary code execution](https://junglewise.ai/threats/cve-2026-78971-halo-cms-plugin-management-arbitrary-code-execution) (medium, CVSS 4.6, published 8 Sep 2026)
- [CVE-2026-16088: halo-dev Halo path traversal in Files Backup Endpoint](https://junglewise.ai/threats/cve-2026-16088-halo-dev-halo-path-traversal-in-files-backup-endpoint) (medium, CVSS 4.7, published 18 Jul 2026)
- [CVE-2026-15326: halo-dev Halo path traversal in Theme Installation](https://junglewise.ai/threats/cve-2026-15326-halo-dev-halo-path-traversal-in-theme-installation) (low, CVSS 3.8, published 10 Jul 2026)
- [CVE-2026-55439: Halo path traversal in backup download endpoint](https://junglewise.ai/threats/cve-2026-55439-halo-path-traversal-in-backup-download-endpoint) (medium, CVSS 5.5, published 25 Jun 2026)
- [CVE-2025-15141: A vulnerability was determined in Halo up to 2.21.10. This issue affects some unknown processing of the file /actuator…](https://junglewise.ai/threats/cve-2025-15141-a-vulnerability-was-determined-in-halo-up-to-2-21-10-this-issue) (low, CVSS 3.1, published 28 Dec 2025)
- [CVE-2025-60898: Halo Halo CMS SSRF in Thumbnail via-uri endpoint](https://junglewise.ai/threats/cve-2025-60898-halo-halo-cms-ssrf-in-thumbnail-via-uri-endpoint) (medium, CVSS 5.8, published 29 Oct 2025)
- [CVE-2025-51857: Halo AttachmentReconciler cross-site scripting](https://junglewise.ai/threats/cve-2025-51857-halo-attachmentreconciler-cross-site-scripting) (medium, CVSS 6.1, published 5 Aug 2025)

## Most severe Halo vulnerabilities

- [CVE-2026-91772: Halo open redirect vulnerability in thumbnail endpoint](https://junglewise.ai/threats/cve-2026-91772-halo-open-redirect-vulnerability-in-thumbnail-endpoint) (medium, CVSS 6.1, published 15 Sep 2026)
- [CVE-2025-51857: Halo AttachmentReconciler cross-site scripting](https://junglewise.ai/threats/cve-2025-51857-halo-attachmentreconciler-cross-site-scripting) (medium, CVSS 6.1, published 5 Aug 2025)
- [CVE-2025-60898: Halo Halo CMS SSRF in Thumbnail via-uri endpoint](https://junglewise.ai/threats/cve-2025-60898-halo-halo-cms-ssrf-in-thumbnail-via-uri-endpoint) (medium, CVSS 5.8, published 29 Oct 2025)
- [CVE-2026-55439: Halo path traversal in backup download endpoint](https://junglewise.ai/threats/cve-2026-55439-halo-path-traversal-in-backup-download-endpoint) (medium, CVSS 5.5, published 25 Jun 2026)
- [CVE-2026-16088: halo-dev Halo path traversal in Files Backup Endpoint](https://junglewise.ai/threats/cve-2026-16088-halo-dev-halo-path-traversal-in-files-backup-endpoint) (medium, CVSS 4.7, published 18 Jul 2026)
- [CVE-2026-78971: Halo CMS plugin management arbitrary code execution](https://junglewise.ai/threats/cve-2026-78971-halo-cms-plugin-management-arbitrary-code-execution) (medium, CVSS 4.6, published 8 Sep 2026)
- [CVE-2026-15326: halo-dev Halo path traversal in Theme Installation](https://junglewise.ai/threats/cve-2026-15326-halo-dev-halo-path-traversal-in-theme-installation) (low, CVSS 3.8, published 10 Jul 2026)
- [CVE-2025-15141: A vulnerability was determined in Halo up to 2.21.10. This issue affects some unknown processing of the file /actuator…](https://junglewise.ai/threats/cve-2025-15141-a-vulnerability-was-determined-in-halo-up-to-2-21-10-this-issue) (low, CVSS 3.1, published 28 Dec 2025)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 1 | 0 | 0 |
| 14 Sep 2026 | 1 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Halo vulnerabilities", https://junglewise.ai/threats/technologies/halo, 9 November 2026.