Is CVE-2021-29438 in the CISA KEV catalog?

No. CVE-2021-29438 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-29438?

CVE-2021-29438 has a CVSS v3 base score of 4.6 (MEDIUM).

What is the EPSS score for CVE-2021-29438?

CVE-2021-29438 has an EPSS score of 0.70% (49th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-29438?

Upgrade nextcloud\/dialogs to 3.1.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-29438

MEDIUM

4.6

CVSS v3

NVD

Description

The Nextcloud dialogs library (npm package @nextcloud/dialogs) before 3.1.2 insufficiently escaped text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability. The vulnerability has been patched in version 3.1.2 If you need to display HTML in the toast, explicitly pass the `options.isHTML` config flag.

CWE-79Cross-Site Scripting (XSS)CWE-80

How to fix

Remediation Available

nextcloud\/dialogsNVD

Affected:< 3.1.2Fixed in:3.1.2CVE-2021-29438derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Exploit Intelligence

0.70%probability of exploitation in 30 days

49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Third-Party Advisory1

github.com

Other references1

npmjs.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.