How severe is CVE-2025-46550?

CVE-2025-46550 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-2025-46550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-46550?

CVE-2025-46550 affects Yeswiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-46550?

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

Does CVE-2025-46550 have an EU (EUVD) identifier?

Yes. CVE-2025-46550 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12662.

When was CVE-2025-46550 published?

CVE-2025-46550 was published on 2025-04-29 and last updated on 2026-06-17.

CVE-2025-46550

CVE-2025-46550 is a medium-severity vulnerability in Yeswiki 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12662
Weakness: CWE-79
Affected product: Yeswiki
Published: 2025-04-29
Last modified: 2026-06-17

Description

YesWiki is a wiki system written in PHP. Prior to version 4.5.4, the `/?BazaR` endpoint and `idformulaire` parameter are vulnerable to cross-site scripting. An attacker can use a reflected cross-site scripting attack to steal cookies from an authenticated user by having them click on a malicious link. Stolen cookies allow the attacker to take over the user’s session. This vulnerability may also allow attackers to deface the website or embed malicious content. This issue has been patched in version 4.5.4.

Frequently asked questions

What is CVE-2025-46550?: YesWiki is a wiki system written in PHP. Prior to version 4.5.4, the `/?BazaR` endpoint and `idformulaire` parameter are vulnerable to cross-site scripting. An attacker can use a reflected cross-site scripting attack to steal cookies from an authenticated user by having them click on a malicious link. Stolen cookies allow the attacker to take over the user’s session. This vulnerability may also allow attackers to deface the website or embed malicious content. This issue has been patched in version 4.5.4.
How severe is CVE-2025-46550?: CVE-2025-46550 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-2025-46550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-46550?: CVE-2025-46550 affects Yeswiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-46550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-46550 have an EU (EUVD) identifier?: Yes. CVE-2025-46550 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12662.
When was CVE-2025-46550 published?: CVE-2025-46550 was published on 2025-04-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*

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