CVE-2021-27671
CVE-2021-27671 is a medium-severity vulnerability in Comrak Project Comrak with a CVSS 3.x base score of 6.1. 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 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Comrak Project Comrak
- Published:
- Last modified:
Description
An issue was discovered in the comrak crate before 0.9.1 for Rust. XSS can occur because the protection mechanism for data: and javascript: URIs is case-sensitive, allowing (for example) Data: to be used in an attack.
Frequently asked questions
- What is CVE-2021-27671?
- An issue was discovered in the comrak crate before 0.9.1 for Rust. XSS can occur because the protection mechanism for data: and javascript: URIs is case-sensitive, allowing (for example) Data: to be used in an attack.
- How severe is CVE-2021-27671?
- CVE-2021-27671 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-27671 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27671?
- CVE-2021-27671 affects Comrak Project Comrak. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27671?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-27671 published?
- CVE-2021-27671 was published on 2021-02-25 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:comrak_project:comrak:*:*:*:*:*:rust:*:*
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