CVE-2022-4959: A vulnerability classified as problematic was found in qkmc-rk redbbs 1.0

Routine

LOW 3.5DOWNGRADE

CVE-2022-4959 is a low-severity flaw (CVSS 3.5) affecting redbbs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as problematic was found in qkmc-rk redbbs 1.0. Affected by this vulnerability is an unknown functionality of the component Nickname Handler. The manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-250237 was assigned to this vulnerability.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-01-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: qkmc-rk

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

Am I affected?

Timeline

2024-01-11 21:15 UTCPublished CVE record published
2026-06-17 05:22 UTCUpdated Record last modified

qkmc-rk redbbs DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison redbbs sudo apt install redbbs=<VERSION_BEFORE_1.0> sudo apt-mark hold redbbs

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

dnf --showduplicates list redbbs sudo dnf downgrade redbbs-<VERSION_BEFORE_1.0> sudo dnf versionlock add redbbs

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-2022-4959?

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

Is CVE-2022-4959 being exploited?

CVE-2022-4959 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-2022-4959 affect?

CVE-2022-4959 affects redbbs. Severity is low (CVSS 3.5). A vulnerability classified as problematic was found in qkmc-rk redbbs 1.0. Affected by this vulnerability is an unknown functionality of the component Nickname Handler. The manipulation leads to cross site scripting. The attack can be launc

How urgent is CVE-2022-4959?

Priority 27/100. Public exploit reference

Related CVEs

CVE-2022-4958 LOW 3.5 DOWNGRADE A vulnerability classified as problematic has been found in qkmc-rk redbbs 1.0

References

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