RSS feed could redirect its subscription to a local file or network share
CVSS score
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EPSS probability
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Risk score
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Published
4 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
A vulnerability exists in Thunderbird where a remote RSS feed can redirect its subscription to a local file or network share. This can lead to NTLM credential leakage on Windows systems and local file reading on other operating systems.
This vulnerability allows attackers to access users' local files or compromise NTLM credentials in Windows environments, posing confidentiality and integrity risks.
What should be done?
- Follow official vendor advisories
- Review Thunderbird 159 and Thunderbird 153.6
- Consult vendor guidance regarding update status
Chain of evidence and sources
Uzak bir RSS akışı, abonelik URL'sini yerel bir dosyaya veya ağ paylaşımına kalıcı olarak değiştirebilir.
NTLM kimlik bilgilerinin sızdırılması yalnızca Windows üzerindeki Thunderbird'ü etkilerken, diğer işletim sistemleri yalnızca yerel dosya okuma etkisine maruz kalmaktadır.
Bu güvenlik açığı Thunderbird 159 ve Thunderbird 153.6 sürümlerinde giderilmiştir.
Show the technical text from the sources
A remote RSS feed could use the itunes:new-feed-url or newLocation element to permanently change its stored subscription URL to a file: URL. Thunderbird then read that location on every feed update. This allowed a malicious feed, or an attacker able to modify a feed delivered over HTTP, to make Thunderbird read local files and, on Windows, connect to an attacker-controlled network share, which could leak the user's NTLM credentials. The NTLM credential leak only affects Thunderbird on Windows. Other operating systems are affected by the local file read only. This vulnerability was fixed in Thunderbird 159 and Thunderbird 153.6.
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-118178 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | mozilla | thunderbird | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-118178 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-118178 weaknesses.
Official Sources and Advisories
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