How severe is CVE-2021-25993?

CVE-2021-25993 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-2021-25993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25993?

CVE-2021-25993 primarily affects Requarks Wiki.js. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-25993?

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

When was CVE-2021-25993 published?

CVE-2021-25993 was published on 2021-12-29 and last updated on 2026-06-17.

CVE-2021-25993

CVE-2021-25993 is a medium-severity vulnerability in Requarks Wiki.js 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: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Requarks Wiki.js
Published: 2021-12-29
Last modified: 2026-06-17

Description

In Requarks wiki.js, versions 2.0.0-beta.147 to 2.5.255 are affected by Stored XSS vulnerability, where a low privileged (editor) user can upload a SVG file that contains malicious JavaScript while uploading assets in the page. That will send the JWT tokens to the attacker’s server and will lead to account takeover when accessed by the victim.

Frequently asked questions

What is CVE-2021-25993?: In Requarks wiki.js, versions 2.0.0-beta.147 to 2.5.255 are affected by Stored XSS vulnerability, where a low privileged (editor) user can upload a SVG file that contains malicious JavaScript while uploading assets in the page. That will send the JWT tokens to the attacker’s server and will lead to account takeover when accessed by the victim.
How severe is CVE-2021-25993?: CVE-2021-25993 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-2021-25993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25993?: CVE-2021-25993 primarily affects Requarks Wiki.js. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-25993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25993 published?: CVE-2021-25993 was published on 2021-12-29 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:a:requarks:wiki.js:*:*:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta147:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta148:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta174:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta180:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta203:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta208:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta230:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta241:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta267:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta268:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta275:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:beta303:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:requarks:wiki.js:2.0.0:rc17:*:*:*:*:*:*

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