Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl accept malformed UTF-8 in bare hash keys under allow_barekey in decode_hv
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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
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%55
Short explanation
CVE-2026-110675 affects Cpanel::JSON::XS versions 4.33 through 4.80 for Perl within decode_hv. When allow_barekey and utf8 are enabled, bare hash keys accept malformed UTF-8 without validation.
Improperly stored malformed UTF-8 bytes can cause subsequent operations on the key, such as lc, uc, or re-encoding, to fail with a malformed UTF-8 error.
What should be done?
- Apply the patch references provided by the vendor
- Review the CNA advisory details for fixes
Chain of evidence and sources
Cpanel::JSON::XS 4.33 ile 4.80 sürümleri arasındaki decode_hv fonksiyonu, allow_barekey altında çıplak hash anahtarlarında bozuk UTF-8 kabul eder.
Tırnak içine alınmış anahtarlar UTF-8 için doğrulanırken, çıplak anahtarların baytları herhangi bir kontrol yapılmadan UTF-8 bayraklı bir dizi olarak saklanır.
Anahtar üzerinde daha sonra gerçekleştirilecek lc, uc veya yeniden kodlama işlemleri bozuk UTF-8 hatasıyla sonlanır.
Show the technical text from the sources
Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl accept malformed UTF-8 in bare hash keys under allow_barekey in decode_hv. With utf8 and allow_barekey, which relaxed enables, a quoted key is validated as UTF-8 but a bare key's bytes are stored as a UTF-8 flagged string without any check. Malformed UTF-8, control bytes and backslashes reach the decoded hash, while malformed UTF-8 and control bytes in a quoted key or a value are rejected. Later operations on the key, including lc, uc or encoding the hash again, die with a malformed UTF-8 error.
CWE: CWE-1286
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-110675 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | CPANSec | Cpanel-JSON-XS | 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
2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.
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-2026-110675 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-2026-110675 weaknesses.
Official Sources and Advisories
Similar Vulnerabilities
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