CVE-2025-65754: Cross Site Scripting vulnerability in Algernon v1.17.4 allows attackers to execute arbitrary code via injectin

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-65754 is a medium-severity flaw (CVSS 6.1) affecting algernon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Algernon v1.17.4 allows attackers to execute arbitrary code via injecting a crafted payload into a filename.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-12-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: algernon project

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

Am I affected?

Timeline

2025-12-10 18:16 UTCPublished CVE record published
2026-06-17 09:55 UTCUpdated Record last modified

algernon project algernon DOWNGRADE

Affected: 1.17.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.17.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.17.4 (Debian / Ubuntu)

apt-cache madison algernon sudo apt install algernon=<VERSION_BEFORE_1.17.4> sudo apt-mark hold algernon

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list algernon sudo dnf downgrade algernon-<VERSION_BEFORE_1.17.4> sudo dnf versionlock add algernon

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-2025-65754?

algernon: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-65754 being exploited?

CVE-2025-65754 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-2025-65754 affect?

CVE-2025-65754 affects algernon. Severity is medium (CVSS 6.1). Cross Site Scripting vulnerability in Algernon v1.17.4 allows attackers to execute arbitrary code via injecting a crafted payload into a filename.

How urgent is CVE-2025-65754?

Priority 36/100. Public exploit reference

References

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