Tornado before 6.6 Cookie Attribute Injection via set_cookie max_age
CVSS score
2.3
EPSS probability
—
Risk score
0.2
Published
6 h ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
0/2
Evidence confidence
%34
Short explanation
Tornado versions prior to 6.6 do not validate the max_age argument of RequestHandler.set_cookie (and related methods), allowing an attacker to inject additional Set‑Cookie attributes such as Domain, Path, or Secure into max_age. This can broaden the cookie’s scope to parent paths or other subdomains.
Broadening cookie scope can lead to session cookie theft or unauthorized access.
What should be done?
- Upgrade to Tornado 6.6 or later
- Apply vendor‑provided advisory when available
- Validate max_age values before calling set_cookie
- Monitor for suspicious Set‑Cookie headers
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Chain of evidence and sources
CVE-2026-123535, Tornado 6.6’dan önceki sürümleri etkiler ve max_age parametresine ek Set‑Cookie öznitelikleri enjekte edilmesine izin verir.
Saldırgan, max_age değerine Domain, Path veya Secure gibi öznitelikler ekleyerek çerez kapsamını genişletebilir.
Bu zafiyet için CISA KEV listesinde aktif istismar rapor edilmemiştir ve yama durumu resmi kaynaklarda doğrulanamamıştır.
Kanonik kaynakta şiddet LOW olarak belirtilirken NVD’de MEDIUM olarak rapor edilmiştir; bu da puanlama çelişkisini gösterir.
Show the technical text from the sources
Tornado before 6.6 does not validate the max_age argument of RequestHandler.set_cookie (also called by set_signed_cookie, set_secure_cookie, and clear_cookie), allowing injection of additional Set-Cookie attributes. When an application passes attacker-influenced input as max_age, an attacker can embed attributes such as Domain, Path, or Secure to widen the cookie's scope to parent paths or other subdomains.
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CWE: CWE-74
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-2026-123535 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | tornadoweb | tornado | 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 |
|---|---|---|---|---|
| 4.2 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N | CVE CNA |
| 4.2 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N | NVD |
| 2.3 | CVSS V4_0 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CVE CNA |
| 2.3 | CVSS V40 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
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-2026-123535 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-2026-123535 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
CVSS Vector Radar Chart
2.3 / 10Vulnerability Scoring Details
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NYama durumu bilinmiyor
Weakness Type (CWE & CAPEC)
Similar Vulnerabilities
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