From f0e7b42704e6b33958f242d91bd690d6ef7ada9c Mon Sep 17 00:00:00 2001 From: Brian Clozel Date: Thu, 12 Jun 2025 08:39:29 +0200 Subject: [PATCH] Encode non-printable character in Content-Disposition parameter Prior to this commit, the "filename" parameter value for the "Content-Disposition" header would contain non-printable characters, causing parsing issues for HTTP clients. This commit ensures that all non-printable characters are encoded. Fixes gh-35034 --- .../java/org/springframework/http/ContentDisposition.java | 1 + .../org/springframework/http/ContentDispositionTests.java | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/spring-web/src/main/java/org/springframework/http/ContentDisposition.java b/spring-web/src/main/java/org/springframework/http/ContentDisposition.java index cf591ef8d3d..bde68f42a90 100644 --- a/spring-web/src/main/java/org/springframework/http/ContentDisposition.java +++ b/spring-web/src/main/java/org/springframework/http/ContentDisposition.java @@ -68,6 +68,7 @@ public final class ContentDisposition { for (int i=33; i<= 126; i++) { PRINTABLE.set(i); } + PRINTABLE.set(34, false); // " PRINTABLE.set(61, false); // = PRINTABLE.set(63, false); // ? PRINTABLE.set(95, false); // _ diff --git a/spring-web/src/test/java/org/springframework/http/ContentDispositionTests.java b/spring-web/src/test/java/org/springframework/http/ContentDispositionTests.java index 0c623407bae..2ed3191cef9 100644 --- a/spring-web/src/test/java/org/springframework/http/ContentDispositionTests.java +++ b/spring-web/src/test/java/org/springframework/http/ContentDispositionTests.java @@ -313,6 +313,13 @@ class ContentDispositionTests { tester.accept("foo.txt\\\\\\", "foo.txt\\\\\\\\\\\\"); } + @Test + void formatWithUtf8FilenameWithQuotes() { + String filename = "\"中文.txt"; + assertThat(ContentDisposition.formData().filename(filename, StandardCharsets.UTF_8).build().toString()) + .isEqualTo("form-data; filename=\"=?UTF-8?Q?=22=E4=B8=AD=E6=96=87.txt?=\"; filename*=UTF-8''%22%E4%B8%AD%E6%96%87.txt"); + } + @Test void formatWithEncodedFilenameUsingInvalidCharset() { assertThatIllegalArgumentException().isThrownBy(() ->