CVE-2025-25477: A host header injection vulnerability in SysPass 3.2x allows an attacker to load malicious JS files from an ar

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HIGH 8.1UPGRADE

CVE-2025-25477 is a high-severity flaw (CVSS 8.1) affecting syspass. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A host header injection vulnerability in SysPass 3.2x allows an attacker to load malicious JS files from an arbitrary domain which would be executed in the victim's browser.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-74
Published	2025-02-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: syspass

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

Am I affected?

Timeline

2025-02-28 00:15 UTCPublished CVE record published
2026-06-17 09:00 UTCUpdated Record last modified

syspass syspass UPGRADE

Affected: >= 3.2.0 and <= 3.2.11

Fixed in: newer than 3.2.11

Safe to downgrade to: a release before 3.2.0

1. Check installed version

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

2. UPGRADE to newer than 3.2.11 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade syspass

Note

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

3. If no update is available yet, DOWNGRADE to a release before 3.2.0 (Debian / Ubuntu)

apt-cache madison syspass sudo apt install syspass=<VERSION_BEFORE_3.2.0> sudo apt-mark hold syspass

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list syspass sudo dnf downgrade syspass-<VERSION_BEFORE_3.2.0> sudo dnf versionlock add syspass

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-25477?

syspass: upgrade to newer than 3.2.11. Exact commands for each OS are on this page.

Is CVE-2025-25477 being exploited?

CVE-2025-25477 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-2025-25477 affect?

CVE-2025-25477 affects syspass. Severity is high (CVSS 8.1). A host header injection vulnerability in SysPass 3.2x allows an attacker to load malicious JS files from an arbitrary domain which would be executed in the victim's browser.

How urgent is CVE-2025-25477?

Priority 42/100. High severity; Public exploit reference

Related CVEs

CVE-2025-25478 MEDIUM 6.5 UPGRADE The account file upload functionality in Syspass 3.2.x fails to properly handle special characters in filename
CVE-2025-25476 MEDIUM 5.4 UPGRADE A stored cross-site scripting (XSS) vulnerability in SysPass 3.2.x allows a malicious user with elevated privi
CVE-2024-42904 MEDIUM 6.1 UPGRADE A cross-site scripting (XSS) vulnerability in SysPass 3.2.x allows attackers to execute arbitrary web scripts

References

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