How severe is CVE-2021-47746?

CVE-2021-47746 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-47746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47746?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-47746 have an EU (EUVD) identifier?

Yes. CVE-2021-47746 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3657.

When was CVE-2021-47746 published?

CVE-2021-47746 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2021-47746

CVE-2021-47746 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.6
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3657
Weakness: CWE-73
Published: 2026-01-21
Last modified: 2026-06-17

Description

NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to write files to arbitrary system locations through the emoji upload API. Attackers with admin access can craft file upload requests with directory traversal to overwrite system files by manipulating the file path parameter.

Frequently asked questions

What is CVE-2021-47746?: NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to write files to arbitrary system locations through the emoji upload API. Attackers with admin access can craft file upload requests with directory traversal to overwrite system files by manipulating the file path parameter.
How severe is CVE-2021-47746?: CVE-2021-47746 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-47746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-47746?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-47746 have an EU (EUVD) identifier?: Yes. CVE-2021-47746 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3657.
When was CVE-2021-47746 published?: CVE-2021-47746 was published on 2026-01-21 and last updated on 2026-06-17.

References

Other CWE-73 vulnerabilities

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