undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| undici | undici | unaffected |
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Configuration 1 [-]
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| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Hardened Images | |||
| nodejs26-main-26.5.1-1.5.hum1 | cpe:/a:redhat:hummingbird:1 | RHSA-2026:48273 | 2026-07-29T00:00:00Z |
| nodejs24-main-24.18.1-0.1.hum1 | cpe:/a:redhat:hummingbird:1 | RHSA-2026:48537 | 2026-07-30T00:00:00Z |
| Vendor | Product | Versions | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Undici | Undici |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-4cwx-7wf7-3272 | undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.463% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat hummingbird |
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| Weaknesses | CWE-524 | |
| CPEs | cpe:/a:redhat:hummingbird:1 | |
| Vendors & Products |
Redhat
Redhat hummingbird |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Undici
Undici undici |
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| Vendors & Products |
Undici
Undici undici |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and later served to a different caller with the same cache key, disclosing private response bodies and headers including Set-Cookie. Separately, a Cache-Control header that combines an unqualified private directive with a qualified one triggers an uncaught TypeError in the cache-control parser, which rejects the request and, depending on the consumer's error handling, can terminate the process. Both issues affect applications using the cache interceptor in shared mode, including the default configuration. The issues are fixed in undici 7.29.0 and 8.9.0. | |
| Title | undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives | |
| Weaknesses | CWE-200 CWE-248 CWE-525 |
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| References |
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| Metrics |
cvssV3_1
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