CVE-2021-32735
published 2021-07-02CVE-2021-32735: 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)…
PriorityP424medium5.4CVSS 3.1
AVNACLPRLUIRSCCLILAN
EPSS
0.53%
40.8th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| getkirby | cms | >= 0 < 3.5.7 | 3.5.7 |
| getkirby | kirby | < 3.5.7 | 3.5.7 |
| getkirby | kirby | <= 3.5.5, <= 3.5.6 | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
nvdv2.03.5LOWAV:N/AC:M/Au:S/C:N/I:P/A:N
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GHSA
Cross-site scripting (XSS) from field and configuration text displayed in the Panel
ghsa·2021-07-02
CVE-2021-32735 [HIGH] CWE-80 Cross-site scripting (XSS) from field and configuration text displayed in the Panel
Cross-site scripting (XSS) from field and configuration text displayed in the Panel
On Saturday, @hdodov reported that 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.
We used his report as an opportunity to find and fix XSS issues related to dynamic site content throughout the Panel codebase.
### Impact
Cross-site scripting (XSS) is a type of vulnerability that allows to execute any kind of JavaScript code inside the Panel session of other users. In the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim.
Such vulnerabilities are critical if you might have potential attackers in your group of authen
OSV
Cross-site scripting (XSS) from field and configuration text displayed in the Panel
osv·2021-07-02
CVE-2021-32735 [HIGH] Cross-site scripting (XSS) from field and configuration text displayed in the Panel
Cross-site scripting (XSS) from field and configuration text displayed in the Panel
On Saturday, @hdodov reported that 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.
We used his report as an opportunity to find and fix XSS issues related to dynamic site content throughout the Panel codebase.
### Impact
Cross-site scripting (XSS) is a type of vulnerability that allows to execute any kind of JavaScript code inside the Panel session of other users. In the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim.
Such vulnerabilities are critical if you might have potential attackers in your group of authen
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-07-02
Published