What’s Vulnerable › Vulnerabilities

CVE-2021-33896

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-07 · updated 2026-06-17
• Weakness: CWE-22

Description

Dino before 0.1.2 and 0.2.x before 0.2.1 allows Directory Traversal (only for creation of new files) via URI-encoded path separators.

Affected products

• Dino: before 0.1.2; from 0.2.0 before 0.2.1 — fixed in 0.1.2, 0.2.1
• Fedoraproject Fedora: 33, 34

How to fix

Upgrade to a fixed version: Dino 0.1.2, 0.2.1. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2021/06/07/2
• https://dino.im/blog/
• https://dino.im/security/cve-2021-33896/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODN4ZSTBYIW25DO3FNRK6FQRGSYGT57I/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P55V3TVSVXREOJAJRXNUSBEUZFOU54V3/
• http://www.openwall.com/lists/oss-security/2021/06/07/2
• https://dino.im/blog/
• https://dino.im/security/cve-2021-33896/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODN4ZSTBYIW25DO3FNRK6FQRGSYGT57I/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P55V3TVSVXREOJAJRXNUSBEUZFOU54V3/

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