CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename
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EPSS probability
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Published
3 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Evidence confidence
%63
Short explanation
CGI versions before 5.00 for Perl contain a vulnerability allowing Content-Disposition parameter injection via unescaped double quotes in the header attachment filename.
This flaw allows an application that passes request data as the attachment name to be manipulated into changing the filename under which the response is saved.
What should be done?
- Follow the vendor advisory or patch reference to apply fixes
- Upgrade the CGI package to version 5.00 or later
Chain of evidence and sources
Perl için CGI sürümleri 5.00 öncesinde başlık ek adındaki kaçış yapılmamış çift tırnaklar aracılığıyla Content-Disposition parametre enjeksiyonuna izin verir.
header(-attachment => $name) işlevi çift tırnakları kaçış işlemine tabi tutmadan yazar ve ikinci bir dosya adı parametresinin gönderilmesine yol açabilir.
Show the technical text from the sources
CGI versions before 5.00 for Perl allow Content-Disposition parameter injection via unescaped double quotes in the header attachment filename. header(-attachment => $name) writes $name into the quoted filename parameter of Content-Disposition without escaping double quotes. An application that passes request data as the attachment name can be made to send a second filename parameter, changing the name the response is saved under.
CWE: CWE-116
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-2026-120647 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | CPANSec | CGI | 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-2026-120647 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-2026-120647 weaknesses.
Official Sources and Advisories
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