CVE-2026-35460: CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in papra-hq papra
Papra versions prior to 26. 4. 0 contain a vulnerability where user display names are directly interpolated into transactional email HTML templates without proper escaping or sanitization. This allows an attacker to inject HTML tags into verification and password reset emails sent from the legitimate domain, enabling phishing attacks that appear as official Papra notifications. The vulnerability is classified as a basic cross-site scripting (XSS) issue and has a medium severity rating with a CVSS score of 4. 3. It is fixed in version 26. 4. 0.
AI Analysis
Technical Summary
CVE-2026-35460 is an improper neutralization of script-related HTML tags vulnerability (CWE-80) in Papra, a document management platform. Prior to version 26.4.0, Papra's transactional email templates interpolate the user.name field directly into HTML email bodies without escaping or sanitization. An attacker registering with a crafted display name containing HTML tags can inject these tags into emails such as verification and password reset messages. Since these emails originate from Papra's legitimate domain, this can facilitate phishing attacks that appear authentic. The vulnerability has a CVSS 3.1 base score of 4.3 (medium severity) and is resolved in Papra 26.4.0.
Potential Impact
The vulnerability allows an attacker to inject arbitrary HTML into transactional emails sent by Papra, potentially enabling phishing attacks that appear to come from a trusted source. There is no direct confidentiality or availability impact reported. The main risk is the integrity of email content and the potential for social engineering attacks leveraging the trusted email origin.
Mitigation Recommendations
This vulnerability is fixed in Papra version 26.4.0. Users and administrators should upgrade to version 26.4.0 or later to remediate this issue. No other official remediation or temporary fixes are documented. Patch status is not explicitly confirmed beyond the version fix note; verify with the vendor advisory for the latest remediation guidance.
CVE-2026-35460: CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in papra-hq papra
Description
Papra versions prior to 26. 4. 0 contain a vulnerability where user display names are directly interpolated into transactional email HTML templates without proper escaping or sanitization. This allows an attacker to inject HTML tags into verification and password reset emails sent from the legitimate domain, enabling phishing attacks that appear as official Papra notifications. The vulnerability is classified as a basic cross-site scripting (XSS) issue and has a medium severity rating with a CVSS score of 4. 3. It is fixed in version 26. 4. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35460 is an improper neutralization of script-related HTML tags vulnerability (CWE-80) in Papra, a document management platform. Prior to version 26.4.0, Papra's transactional email templates interpolate the user.name field directly into HTML email bodies without escaping or sanitization. An attacker registering with a crafted display name containing HTML tags can inject these tags into emails such as verification and password reset messages. Since these emails originate from Papra's legitimate domain, this can facilitate phishing attacks that appear authentic. The vulnerability has a CVSS 3.1 base score of 4.3 (medium severity) and is resolved in Papra 26.4.0.
Potential Impact
The vulnerability allows an attacker to inject arbitrary HTML into transactional emails sent by Papra, potentially enabling phishing attacks that appear to come from a trusted source. There is no direct confidentiality or availability impact reported. The main risk is the integrity of email content and the potential for social engineering attacks leveraging the trusted email origin.
Mitigation Recommendations
This vulnerability is fixed in Papra version 26.4.0. Users and administrators should upgrade to version 26.4.0 or later to remediate this issue. No other official remediation or temporary fixes are documented. Patch status is not explicitly confirmed beyond the version fix note; verify with the vendor advisory for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-02T19:25:52.193Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d51c3baaed68159a2c14f5
Added to database: 4/7/2026, 3:01:15 PM
Last enriched: 4/14/2026, 3:58:31 PM
Last updated: 5/23/2026, 3:45:18 AM
Views: 58
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