The Kossy module before 0.60 for Perl allows JSON hijacking because of X-Requested-With mishandling.
Priority MEDIUM 49CWE-346Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-346.
Summary
The Kossy module before 0.60 for Perl allows JSON hijacking because of X-Requested-With mishandling.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00413 35th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kossy:kossy:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:kossy:kossy:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-47157
- 2026-10-03 Alias added: GHSA-3r58-xjch-5xjp
Sources
- CVE-2021-47157 · CVE Program
- CVE-2021-47157 · NVD
- FIRST EPSS
- GHSA-3r58-xjch-5xjp · GitHub Advisory Database · CC BY 4.0
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