How severe is CVE-2021-24834?

CVE-2021-24834 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24834?

CVE-2021-24834 affects Yop-poll Yop Poll. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24834?

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

When was CVE-2021-24834 published?

CVE-2021-24834 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-24834

CVE-2021-24834 is a medium-severity vulnerability in Yop-poll Yop Poll with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.3
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Yop-poll Yop Poll
Published: 2021-11-17
Last modified: 2026-06-17

Description

The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability which exists in the Create Poll - Options module where a user with a role as low as author is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of custom label parameters - vote button label , results link label and back to vote caption label.

Frequently asked questions

What is CVE-2021-24834?: The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability which exists in the Create Poll - Options module where a user with a role as low as author is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of custom label parameters - vote button label , results link label and back to vote caption label.
How severe is CVE-2021-24834?: CVE-2021-24834 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24834?: CVE-2021-24834 affects Yop-poll Yop Poll. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24834?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24834 published?: CVE-2021-24834 was published on 2021-11-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:yop-poll:yop_poll:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Yop-poll Yop Poll

CVE-2021-24454 — Medium (CVSS 6.1): In the YOP Poll WordPress plugin before 6.2.8, when a pool is created with the options "Allow other answers", "Display…
CVE-2021-24833 — Medium (CVSS 5.4): The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability, which exists in…
CVE-2017-2127 — Medium (CVSS 5.4): Cross-site scripting vulnerability in YOP Poll versions prior to 5.8.1 allows remote attackers to inject arbitrary web…
CVE-2023-6109 — Medium (CVSS 5.3): The YOP Poll plugin for WordPress is vulnerable to a race condition in all versions up to, and including, 6.5.26. This…
CVE-2022-1600 — Medium (CVSS 5.3): The YOP Poll WordPress plugin before 6.4.3 prioritizes getting a visitor's IP from certain HTTP headers over PHP's…

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