How severe is CVE-2020-35943?

CVE-2020-35943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-35943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35943?

CVE-2020-35943 affects Imagely Nextgen Gallery. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35943?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-35943 published?

CVE-2020-35943 was published on 2021-02-09 and last updated on 2026-06-17.

CVE-2020-35943

CVE-2020-35943 is a medium-severity vulnerability in Imagely Nextgen Gallery with a CVSS 3.x base score of 6.5. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Imagely Nextgen Gallery
Published: 2021-02-09
Last modified: 2026-06-17

Description

A Cross-Site Request Forgery (CSRF) issue in the NextGEN Gallery plugin before 3.5.0 for WordPress allows File Upload. (It is possible to bypass CSRF protection by simply not including a nonce parameter.)

Frequently asked questions

What is CVE-2020-35943?: A Cross-Site Request Forgery (CSRF) issue in the NextGEN Gallery plugin before 3.5.0 for WordPress allows File Upload. (It is possible to bypass CSRF protection by simply not including a nonce parameter.)
How severe is CVE-2020-35943?: CVE-2020-35943 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-35943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35943?: CVE-2020-35943 affects Imagely Nextgen Gallery. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35943?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-35943 published?: CVE-2020-35943 was published on 2021-02-09 and last updated on 2026-06-17.

References

https://www.wordfence.com/blog/2021/02/severe-vulnerabilities-patched-in-nextgen-gallery-affect-over-800000-wordpress-sites/

Affected products (1)

cpe:2.3:a:imagely:nextgen_gallery:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Imagely Nextgen Gallery

CVE-2013-3684 — Critical (CVSS 9.8): NextGEN Gallery plugin before 1.9.13 for WordPress: ngggallery.php file upload
CVE-2019-14314 — Critical (CVSS 9.8): A SQL injection vulnerability exists in the Imagely NextGEN Gallery plugin before 3.2.11 for WordPress. Successful…
CVE-2016-10889 — Critical (CVSS 9.8): The nextgen-gallery plugin before 2.1.57 for WordPress has SQL injection via a gallery name.
CVE-2015-1784 — High (CVSS 8.8): In nextgen-galery wordpress plugin before 2.0.77.3 there are two vulnerabilities which can allow an attacker to gain…
CVE-2020-35942 — High (CVSS 8.8): A Cross-Site Request Forgery (CSRF) issue in the NextGEN Gallery plugin before 3.5.0 for WordPress allows File Upload…
CVE-2015-9228 — High (CVSS 8.8): In post-new.php in the Photocrati NextGEN Gallery plugin 2.1.10 for WordPress, unrestricted file upload is available…

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