CVE-2022-31386: A Server-Side Request Forgery (SSRF) in the getFileBinary function of nbnbk cms 3 allows attackers to force th

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2022-31386 is a critical-severity flaw (CVSS 9.1) affecting nbnbk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Server-Side Request Forgery (SSRF) in the getFileBinary function of nbnbk cms 3 allows attackers to force the application to make arbitrary requests via injection of arbitrary URLs into the URL parameter.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-918
Published	2022-06-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nbnbk project

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

Am I affected?

Timeline

2022-06-09 14:15 UTCPublished CVE record published
2026-06-17 04:45 UTCUpdated Record last modified

nbnbk project nbnbk DOWNGRADE

Affected: 3

Fixed in: no fixed release known

Safe to downgrade to: a release before 3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3 (Debian / Ubuntu)

apt-cache madison nbnbk sudo apt install nbnbk=<VERSION_BEFORE_3> sudo apt-mark hold nbnbk

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

dnf --showduplicates list nbnbk sudo dnf downgrade nbnbk-<VERSION_BEFORE_3> sudo dnf versionlock add nbnbk

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-2022-31386?

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

Is CVE-2022-31386 being exploited?

CVE-2022-31386 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-2022-31386 affect?

CVE-2022-31386 affects nbnbk. Severity is critical (CVSS 9.1). A Server-Side Request Forgery (SSRF) in the getFileBinary function of nbnbk cms 3 allows attackers to force the application to make arbitrary requests via injection of arbitrary URLs into the URL parameter.

How urgent is CVE-2022-31386?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-46493 CRITICAL 9.8 MITIGATE Default version of nbnbk was discovered to contain an arbitrary file upload vulnerability via the component /a
CVE-2022-46492 MEDIUM 6.5 MITIGATE nbnbk commit 879858451d53261d10f77d4709aee2d01c72c301 was discovered to contain an arbitrary file read vulnera
CVE-2022-46491 MEDIUM 6.5 MITIGATE A Cross-Site Request Forgery (CSRF) vulnerability in the Add Administrator function of the default version of

References

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