Stored XSS via unsanitized Add fields
Published Mar 15, 2021 · Updated Jul 9, 2026
Stored cross-site scripting in openMAINT 2.1-3.3-b allows remote attackers to inject arbitrary web script or HTML through Add sections. Name and Code parameters are stored without adequate output encoding, so the payload executes when another user views the affected records. Exploitation requires access to the application’s Add forms and a victim who loads the poisoned data; the disclosed impact is browser-side script execution with potential data access or actions in that user’s session.
Summary
What happened
Stored cross-site scripting in openMAINT 2.1-3.3-b allows remote attackers to inject arbitrary web script or HTML through Add sections. Name and Code parameters are stored without adequate output encoding, so the payload executes when another user views the affected records. Exploitation requires access to the application’s Add forms and a victim who loads the poisoned data; the disclosed impact is browser-side script execution with potential data access or actions in that user’s session.
The record
- CVE
- CVE-2021-27695
- Published
- Mar 15, 2021
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 15, 2021CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- openmaint openMAINT 2.1-3.3-b Multiple Persistent XSSfunctional · unverified
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Technologies
Your stack
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Your stack
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