What is the CVSS score of CVE-2021-26799?

CVE-2021-26799 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 1.0%.

Is there a public PoC exploit available for CVE-2021-26799?

Yes, a public proof-of-concept exploit is available for CVE-2021-26799. Prioritise patching immediately. EPSS: 1.0%.

Is there a patch available for CVE-2021-26799?

Yes, a patch is available for CVE-2021-26799. Update the affected software to the latest version immediately.

Omeka CVE-2021-26799

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2021-07-23 cve@mitre.org

XSS Omeka

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Jul 23, 2021 - 11:15 nvd

MEDIUM 6.1

DescriptionNVD

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML.

AnalysisAI

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML. Affected products include: Omeka.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.