CVE-2021-25926: In SiCKRAGE, versions 9.3.54.dev1 to 10.0.11.dev1 are vulnerable to Reflected Cross-Site-Scripting (XSS) due t

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MEDIUM 6.1UPGRADE

CVE-2021-25926 is a medium-severity flaw (CVSS 6.1) affecting sickrage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In SiCKRAGE, versions 9.3.54.dev1 to 10.0.11.dev1 are vulnerable to Reflected Cross-Site-Scripting (XSS) due to user input not being validated properly in the `quicksearch` feature. Therefore, an attacker can steal a user's sessionID to masquerade as a victim user, to carry out any actions in the context of the user.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-04-12
Last modified	2026-06-17

Publisher (CNA): Mend · Vendor: sickrage

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

Am I affected?

Timeline

2021-04-12 14:15 UTCPublished CVE record published
2026-06-17 03:42 UTCUpdated Record last modified

sickrage sickrage UPGRADE

Affected: >= 9.3.54 and < 10.0.11 · 10.0.11 dev1

Fixed in: 10.0.11

Safe to downgrade to: a release before 9.3.54

1. Check installed version

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

2. UPGRADE to 10.0.11 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sickrage

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 9.3.54 (Debian / Ubuntu)

apt-cache madison sickrage sudo apt install sickrage=<VERSION_BEFORE_9.3.54> sudo apt-mark hold sickrage

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

dnf --showduplicates list sickrage sudo dnf downgrade sickrage-<VERSION_BEFORE_9.3.54> sudo dnf versionlock add sickrage

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-2021-25926?

sickrage: upgrade to 10.0.11. Exact commands for each OS are on this page.

Is CVE-2021-25926 being exploited?

CVE-2021-25926 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-2021-25926 affect?

CVE-2021-25926 affects sickrage. Severity is medium (CVSS 6.1). In SiCKRAGE, versions 9.3.54.dev1 to 10.0.11.dev1 are vulnerable to Reflected Cross-Site-Scripting (XSS) due to user input not being validated properly in the `quicksearch` feature. Therefore, an attacker can steal a user's sessionID to mas

How urgent is CVE-2021-25926?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2021-25925 MEDIUM 5.4 UPGRADE in SiCKRAGE, versions 4.2.0 to 10.0.11.dev1 are vulnerable to Stored Cross-Site-Scripting (XSS) due to user in
CVE-2018-9160 CRITICAL 9.8 UPGRADE SickRage before v2018.03.09-1 includes cleartext credentials in HTTP responses.

References

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