CVE-2021-26835
MEDIUMCVSS 6.1/10EPSS 1.29%
Last modified
CVE-2021-26835 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. No filtering of cross-site scripting (XSS) payloads in the markdown-editor in Zettlr 1.8.7 allows attackers to perform remote code execution via a crafted file.. EPSS estimates a 1.29% chance of exploitation in the next 30 days.
Description
No filtering of cross-site scripting (XSS) payloads in the markdown-editor in Zettlr 1.8.7 allows attackers to perform remote code execution via a crafted file.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zettlr | Zettlr | 1.8.7 |
References
- https://github.com/Zettlr/Zettlr/issues/1716Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/Zettlr/Zettlr/releases/tag/v1.8.9Release Notes, Third Party Advisory
- https://github.com/Zettlr/Zettlr/issues/1716Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/Zettlr/Zettlr/releases/tag/v1.8.9Release Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26835?
No filtering of cross-site scripting (XSS) payloads in the markdown-editor in Zettlr 1.8.7 allows attackers to perform remote code execution via a crafted file.
How severe is CVE-2021-26835?
CVE-2021-26835 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26835?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-26835?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST