CVE-2025-44594: halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/

Q: How do I fix CVE-2025-44594?

halo: upgrade to newer than 2.20.17. Exact commands for each OS are on this page.

Q: Is CVE-2025-44594 being exploited?

CVE-2025-44594 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-44594 affect?

CVE-2025-44594 affects halo. Severity is critical (CVSS 9.1). halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/v1alpha1/attachments/-/upload-from-url.

Q: How urgent is CVE-2025-44594?

Priority 45/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2025-44594 is a critical-severity flaw (CVSS 9.1) affecting halo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/v1alpha1/attachments/-/upload-from-url.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-918
Published	2025-09-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: halo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-09 20:15 UTCPublished CVE record published
2026-06-17 09:25 UTCUpdated Record last modified

halo halo UPGRADE

Affected: <= 2.20.17

Fixed in: newer than 2.20.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy halo || rpm -q halo || halo --version

2. UPGRADE to newer than 2.20.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade halo

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade halo

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-44594?

halo: upgrade to newer than 2.20.17. Exact commands for each OS are on this page.

Is CVE-2025-44594 being exploited?

CVE-2025-44594 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-44594 affect?

CVE-2025-44594 affects halo. Severity is critical (CVSS 9.1). halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/v1alpha1/attachments/-/upload-from-url.

How urgent is CVE-2025-44594?

Priority 45/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-14117 MEDIUM 4.3 DOWNGRADE A vulnerability has been found in fit2cloud Halo 2.21.10
CVE-2025-15141 LOW 3.1 UPGRADE A vulnerability was determined in Halo up to 2.21.10
CVE-2025-70886 HIGH 7.5 UPGRADE An issue in halo v.2.22.4 and before allows a remote attacker to cause a denial of service via a crafted paylo
CVE-2025-44595 MEDIUM 6.1 UPGRADE Halo v2.20.17 and before is vulnerable to Cross Site Scripting (XSS) in /halo_host/archives/{name}.
CVE-2025-44593 MEDIUM 6.1 UPGRADE Halo prior to 2.20.13 allows bypassing file type detection and uploading malicious files such as .exe and .htm

References

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