Is CVE-2021-32735 in the CISA KEV catalog?

No. CVE-2021-32735 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-32735?

CVE-2021-32735 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2021-32735?

CVE-2021-32735 has an EPSS score of 0.53% (41th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-32735?

Upgrade kirby to 3.5.7 or later.

CVE & CISA-KEV Catalog

CVE-2021-32735

HIGH

7.1

CVSS v3

NVD

Description

Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. Kirby 3.5.7 patches the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.

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

How to fix

Remediation Available

kirbyNVD

Affected:< 3.5.7Fixed in:3.5.7CVE-2021-32735derived 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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.53%probability of exploitation in 30 days

41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-80 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-21145	Medium	4.8	78%	-	-
CVE-2020-13562	Medium	6.1	78%	-	-
CVE-2020-13965	Medium	6.1	77%	KEV	Fix
CVE-2020-13564	Medium	6.1	76%	-	-
CVE-2020-13563	Medium	6.1	76%	-	-
CVE-2024-4439	High	7.2	71%	-	Fix

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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.