How severe is CVE-2021-25959?

CVE-2021-25959 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-25959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25959?

CVE-2021-25959 affects Opencrx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25959?

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

When was CVE-2021-25959 published?

CVE-2021-25959 was published on 2021-09-29 and last updated on 2026-06-17.

CVE-2021-25959

CVE-2021-25959 is a medium-severity vulnerability in Opencrx with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Opencrx
Published: 2021-09-29
Last modified: 2026-06-17

Description

In OpenCRX, versions v4.0.0 through v5.1.0 are vulnerable to reflected Cross-site Scripting (XSS), due to unsanitized parameters in the password reset functionality. This allows execution of external javascript files on any user of the openCRX instance.

Frequently asked questions

What is CVE-2021-25959?: In OpenCRX, versions v4.0.0 through v5.1.0 are vulnerable to reflected Cross-site Scripting (XSS), due to unsanitized parameters in the password reset functionality. This allows execution of external javascript files on any user of the openCRX instance.
How severe is CVE-2021-25959?: CVE-2021-25959 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-25959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25959?: CVE-2021-25959 affects Opencrx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25959 published?: CVE-2021-25959 was published on 2021-09-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opencrx:opencrx:*:*:*:*:*:*:*:*

More vulnerabilities in Opencrx

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CVE-2023-40817 — Medium (CVSS 6.1): OpenCRX version 5.2.0 is vulnerable to HTML injection via the Product Configuration Name Field.
CVE-2023-40816 — Medium (CVSS 6.1): OpenCRX version 5.2.0 is vulnerable to HTML injection via Activity Milestone Name Field.
CVE-2023-40815 — Medium (CVSS 6.1): OpenCRX version 5.2.0 is vulnerable to HTML injection via the Category Creation Name Field.

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