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Fix incorrect weak ETag validation #33374

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Fix incorrect weak ETag validation #33374

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4 changes: 2 additions & 2 deletions spring-web/src/main/java/org/springframework/http/HttpHeaders.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1073,8 +1073,8 @@ public long getDate() {
*/
public void setETag(@Nullable String etag) {
if (etag != null) {
Assert.isTrue(etag.startsWith("\"") || etag.startsWith("W/"),
"Invalid ETag: does not start with W/ or \"");
Assert.isTrue(etag.startsWith("\"") || etag.startsWith("W/\""),
"Invalid ETag: does not start with W/\" or \"");
Assert.isTrue(etag.endsWith("\""), "Invalid ETag: does not end with \"");
set(ETAG, etag);
}
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6 changes: 6 additions & 0 deletions spring-web/src/test/java/org/springframework/http/HttpHeadersTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -219,6 +219,12 @@ void illegalETag() {
assertThatIllegalArgumentException().isThrownBy(() -> headers.setETag(eTag));
}

@Test
void illegalETagWithoutQuoteAfterWSlash() {
String etag = "W/v2.6\"";
assertThatIllegalArgumentException().as("Invalid Weak ETag").isThrownBy(() -> headers.setETag(etag));
}

@Test
void ifMatch() {
String ifMatch = "\"v2.6\"";
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