CVE-2022-46493: Default version of nbnbk was discovered to contain an arbitrary file upload vulnerability via the component /a

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2022-46493 is a critical-severity flaw (CVSS 9.8) affecting nbnbk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Default version of nbnbk was discovered to contain an arbitrary file upload vulnerability via the component /api/User/download_img.

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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-12-22
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

2022-12-22 23:15 UTCPublished CVE record published
2026-06-17 05:11 UTCUpdated Record last modified

nbnbk project nbnbk MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

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

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2022-46493?

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

Is CVE-2022-46493 being exploited?

CVE-2022-46493 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-2022-46493 affect?

CVE-2022-46493 affects nbnbk. Severity is critical (CVSS 9.8). Default version of nbnbk was discovered to contain an arbitrary file upload vulnerability via the component /api/User/download_img.

How urgent is CVE-2022-46493?

Priority 59/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

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CVE-2022-46491 MEDIUM 6.5 MITIGATE A Cross-Site Request Forgery (CSRF) vulnerability in the Add Administrator function of the default version of
CVE-2022-31386 CRITICAL 9.1 DOWNGRADE A Server-Side Request Forgery (SSRF) in the getFileBinary function of nbnbk cms 3 allows attackers to force th

References

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