Bug 2491467 (CVE-2026-54282)
| Summary: | CVE-2026-54282 starlette: Starlette: Information disclosure due to improper HTTP request path validation | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | adudiak, alinfoot, anpicker, anthomas, aprice, bbrownin, bparees, dfreiber, drow, dschmidt, dtrifiro, ehelms, erezende, ggainey, hasun, ilpinto, jburrell, jdobes, jfula, jkoehler, jlanda, jowilson, jpasqual, jsamir, juwatts, jwong, kaycoth, kshier, lphiri, ltomasbo, mbarnett, mhayden, mhulan, nmoumoul, nyancey, oezr, omaciel, ometelka, orabin, osousa, pcreech, prwatson, ptisnovs, rbryant, rchan, rjohnson, sdoran, simaishi, smallamp, stcannon, syedriko, teagle, tmalecek, ttakamiy, vkumar, weaton, xdharmai, yguenane, ykashtan |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Starlette, a lightweight Asynchronous Server Gateway Interface (ASGI) framework. Prior to version 1.3.0, the HTTP request path was not properly validated when reconstructing the `request.url`. A remote attacker could craft a malicious HTTP request path that does not begin with a forward slash, causing the framework to misinterpret the authority boundary. This could lead to `request.url.hostname` and `request.url.netloc` becoming attacker-controlled, potentially misleading applications that rely on these values into trusting an attacker-supplied host.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating {scheme}://{host}{path} and re-parsing the result, a path that does not begin with / (for example @google.com) moves the authority boundary during re-parsing, so request.url.hostname and request.url.netloc become attacker-controlled. Code that reads request.url.hostname (rather than the Host header or scope) can therefore be misled into trusting an attacker-supplied host. This vulnerability is fixed in 1.3.0.