CVE-2025-15454
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in zhanglun lettura RSS reader software versions up to 0.1.22. The vulnerability allows attackers to inject malicious scripts into the RSS feed rendering component, which could lead to session hijacking, credential theft, or other client-side attacks. Users running affected versions of lettura are at risk.
💻 Affected Systems
- zhanglun lettura
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal user sessions, credentials, or perform actions on behalf of authenticated users, potentially leading to account compromise and data theft.
Likely Case
Attackers could execute arbitrary JavaScript in users' browsers, potentially stealing cookies, session tokens, or performing limited client-side attacks.
If Mitigated
With proper input validation and output encoding, the impact is limited to minor UI manipulation or no impact if the vulnerability is properly patched.
🎯 Exploit Status
The exploit is publicly available but requires specific conditions and manipulation of RSS feed content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit 67213093db9923e828a6e3fd8696a998c85da2d4 and later
Vendor Advisory: https://github.com/zhanglun/lettura/commit/67213093db9923e828a6e3fd8696a998c85da2d4
Restart Required: Yes
Instructions:
1. Update lettura to the latest version or apply commit 67213093db9923e828a6e3fd8696a998c85da2d4
2. Restart the lettura application
3. Verify the fix by checking the ContentRender.tsx file for proper input sanitization
🔧 Temporary Workarounds
Disable RSS feed rendering
allTemporarily disable the RSS Handler component to prevent exploitation
Modify application configuration to disable RSS feed processing
Implement WAF rules
allAdd web application firewall rules to block XSS payloads in RSS feed content
Configure WAF to filter script tags and JavaScript in RSS content
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to limit script execution
- Monitor RSS feed sources and sanitize all incoming feed content before processing
🔍 How to Verify
Check if Vulnerable:
Check if lettura version is 0.1.22 or earlier by examining package.json or running 'npm list lettura'Check Version:
npm list lettura | grep letturaVerify Fix Applied:
Verify that commit 67213093db9923e828a6e3fd8696a998c85da2d4 is applied in the git history and check ContentRender.tsx for proper input sanitization📡 Detection & Monitoring
Log Indicators:
- Unusual RSS feed parsing errors
- JavaScript execution errors in browser console logs
- Suspicious characters in RSS content processing
Network Indicators:
- Malformed RSS feed requests containing script tags
- Unexpected JavaScript payloads in HTTP responses
SIEM Query:
source="lettura" AND ("script" OR "javascript" OR "onerror" OR "onload") IN http_content🔗 References
- https://gist.github.com/youremailaddress/cba7c19a4eafcb326d0e912adf132be3
- https://gist.github.com/youremailaddress/cba7c19a4eafcb326d0e912adf132be3#proof-of-concept
- https://github.com/zhanglun/lettura/
- https://github.com/zhanglun/lettura/commit/67213093db9923e828a6e3fd8696a998c85da2d4
- https://vuldb.com/?ctiid.339487
- https://vuldb.com/?id.339487
- https://vuldb.com/?submit.725038
