How severe is CVE-2026-22204?

CVE-2026-22204 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-22204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22204?

CVE-2026-22204 affects Gvectors Wpdiscuz. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22204?

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

Does CVE-2026-22204 have an EU (EUVD) identifier?

Yes. CVE-2026-22204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11749.

When was CVE-2026-22204 published?

CVE-2026-22204 was published on 2026-03-13 and last updated on 2026-06-17.

CVE-2026-22204

CVE-2026-22204 is a low-severity vulnerability in Gvectors Wpdiscuz with a CVSS 3.x base score of 3.7. 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-20.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v4: 6.3
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11749
Weakness: CWE-20
Affected product: Gvectors Wpdiscuz
Published: 2026-03-13
Last modified: 2026-06-17

Description

wpDiscuz before 7.6.47 contains an email header injection vulnerability that allows attackers to manipulate mail recipients by injecting malicious data into the comment_author_email cookie. Attackers can craft a malicious cookie value that, when processed through urldecode() and passed to wp_mail() functions, enables header injection to alter email recipients or inject additional headers.

Frequently asked questions

What is CVE-2026-22204?: wpDiscuz before 7.6.47 contains an email header injection vulnerability that allows attackers to manipulate mail recipients by injecting malicious data into the comment_author_email cookie. Attackers can craft a malicious cookie value that, when processed through urldecode() and passed to wp_mail() functions, enables header injection to alter email recipients or inject additional headers.
How severe is CVE-2026-22204?: CVE-2026-22204 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-22204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22204?: CVE-2026-22204 affects Gvectors Wpdiscuz. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22204?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22204 have an EU (EUVD) identifier?: Yes. CVE-2026-22204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11749.
When was CVE-2026-22204 published?: CVE-2026-22204 was published on 2026-03-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:*

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