Http4s: ResourceService and Webjar Service path escape via percent-encoded separators
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| http4s | http4s | affected |
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| Source | ID | Title |
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Github GHSA |
GHSA-crq5-92j2-j7wv | Http4s: ResourceService and Webjar Service path escape via percent-encoded separators |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.758% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Http4s
Http4s http4s |
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| Vendors & Products |
Http4s
Http4s http4s |
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| Metrics |
ssvc
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| Description | Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, ResourceService and WebjarService decode each URL path segment but reject only segments exactly equal to an empty string, a dot, or two dots. A request containing percent-encoded slash or backslash separators can turn an accepted segment into a parent-directory traversal after decoding, allowing access to classpath or WebJar resources outside the configured base when a directory-backed classpath is served and the backend preserves the encoded separator. The patch rejects decoded segments containing slash or backslash in ResourceService and WebjarService, and applies the same guard to the non-exploitable FileService for consistency. This issue is fixed in versions 0.23.35 and 1.0.0-M47. | |
| Title | Http4s: ResourceService and Webjar Service path escape via percent-encoded separators | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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