How severe is CVE-2021-24853?

CVE-2021-24853 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-24853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24853?

CVE-2021-24853 affects Qr Redirector Project Qr Redirector. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24853?

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

When was CVE-2021-24853 published?

CVE-2021-24853 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-24853

CVE-2021-24853 is a medium-severity vulnerability in Qr Redirector Project Qr Redirector with a CVSS 3.x base score of 4.3. 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 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Qr Redirector Project Qr Redirector
Published: 2021-11-17
Last modified: 2026-06-17

Description

The QR Redirector WordPress plugin before 1.6 does not have capability and CSRF checks when saving bulk QR Redirector settings via the qr_save_bulk AJAX action, which could allow any authenticated user, such as subscriber to change the redirect response status code of arbitrary QR Redirects

Frequently asked questions

What is CVE-2021-24853?: The QR Redirector WordPress plugin before 1.6 does not have capability and CSRF checks when saving bulk QR Redirector settings via the qr_save_bulk AJAX action, which could allow any authenticated user, such as subscriber to change the redirect response status code of arbitrary QR Redirects
How severe is CVE-2021-24853?: CVE-2021-24853 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-24853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24853?: CVE-2021-24853 affects Qr Redirector Project Qr Redirector. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24853 published?: CVE-2021-24853 was published on 2021-11-17 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/240bed24-0315-4bbf-ba17-e4947e5ecacb

Affected products (1)

cpe:2.3:a:qr_redirector_project:qr_redirector:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Qr Redirector Project Qr Redirector

CVE-2021-24854 — Medium (CVSS 5.4): The QR Redirector WordPress plugin before 1.6.1 does not sanitise and escape some of the QR Redirect fields, which…

All CVEs affecting Qr Redirector Project Qr Redirector →

Other CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities

CVE-2025-32642 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in appsbd Vite Coupon vite-coupon allows Remote Code Inclusion.This…
CVE-2025-23922 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in Harsh iSpring Embedder embed-ispring allows Upload a Web Shell to a…
CVE-2017-5145 — Critical (CVSS 10.0): An issue was discovered in Carlo Gavazzi VMU-C EM prior to firmware Version A11_U05, and VMU-C PV prior to firmware…
CVE-2019-25729 — Critical (CVSS 9.8): PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute…
CVE-2025-48340 — Critical (CVSS 9.8): Cross-Site Request Forgery (CSRF) vulnerability in Danny Vink User Profile Meta Manager user-profile-meta allows…
CVE-2025-2907 — Critical (CVSS 9.8): The Order Delivery Date WordPress plugin before 12.3.1 does not have authorization and CSRF checks when importing…

Browse all CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities →