diff -up oauthlib-3.1.1/oauthlib/uri_validate.py.orig oauthlib-3.1.1/oauthlib/uri_validate.py
--- oauthlib-3.1.1/oauthlib/uri_validate.py.orig	2021-06-01 21:11:24.000000000 +0200
+++ oauthlib-3.1.1/oauthlib/uri_validate.py	2022-10-24 14:42:42.147180444 +0200
@@ -66,7 +66,7 @@ IPv4address = r"%(dec_octet)s \. %(dec_o
 )
 
 #   IPv6address
-IPv6address = r"([A-Fa-f0-9:]+:+)+[A-Fa-f0-9]+"
+IPv6address = r"([A-Fa-f0-9:]+[:$])[A-Fa-f0-9]{1,4}"
 
 #   IPvFuture     = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
 IPvFuture = r"v %(HEXDIG)s+ \. (?: %(unreserved)s | %(sub_delims)s | : )+" % locals()
diff -up oauthlib-3.1.1/tests/test_uri_validate.py.orig oauthlib-3.1.1/tests/test_uri_validate.py
--- oauthlib-3.1.1/tests/test_uri_validate.py.orig	2021-06-01 21:11:24.000000000 +0200
+++ oauthlib-3.1.1/tests/test_uri_validate.py	2022-10-24 14:44:26.180296911 +0200
@@ -1,4 +1,4 @@
-import oauthlib
+import unittest
 from oauthlib.uri_validate import is_absolute_uri
 
 from tests.unittest import TestCase
@@ -7,7 +7,6 @@ from tests.unittest import TestCase
 class UriValidateTest(TestCase):
 
     def test_is_absolute_uri(self):
-
         self.assertIsNotNone(is_absolute_uri('schema://example.com/path'))
         self.assertIsNotNone(is_absolute_uri('https://example.com/path'))
         self.assertIsNotNone(is_absolute_uri('https://example.com'))
@@ -17,17 +16,64 @@ class UriValidateTest(TestCase):
         self.assertIsNotNone(is_absolute_uri('http://example.com'))
         self.assertIsNotNone(is_absolute_uri('http://example.com/path'))
         self.assertIsNotNone(is_absolute_uri('http://example.com:80/path'))
-        self.assertIsNotNone(is_absolute_uri('com.example.bundle.id:/'))
+
+    def test_query(self):
+        self.assertIsNotNone(is_absolute_uri('http://example.com:80/path?foo'))
+        self.assertIsNotNone(is_absolute_uri('http://example.com:80/path?foo=bar'))
+        self.assertIsNotNone(is_absolute_uri('http://example.com:80/path?foo=bar&fruit=banana'))
+
+    def test_fragment_forbidden(self):
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path#foo'))
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path#foo=bar'))
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path#foo=bar&fruit=banana'))
+
+    def test_combined_forbidden(self):
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path?foo#bar'))
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path?foo&bar#fruit'))
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path?foo=1&bar#fruit=banana'))
+        self.assertIsNone(is_absolute_uri('http://example.com:80/path?foo=1&bar=2#fruit=banana&bar=foo'))
+
+    def test_custom_scheme(self):
+        self.assertIsNotNone(is_absolute_uri('com.example.bundle.id://'))
+
+    def test_ipv6_bracket(self):
         self.assertIsNotNone(is_absolute_uri('http://[::1]:38432/path'))
         self.assertIsNotNone(is_absolute_uri('http://[::1]/path'))
         self.assertIsNotNone(is_absolute_uri('http://[fd01:0001::1]/path'))
         self.assertIsNotNone(is_absolute_uri('http://[fd01:1::1]/path'))
         self.assertIsNotNone(is_absolute_uri('http://[0123:4567:89ab:cdef:0123:4567:89ab:cdef]/path'))
+        self.assertIsNotNone(is_absolute_uri('http://[0123:4567:89ab:cdef:0123:4567:89ab:cdef]:8080/path'))
+
+    @unittest.skip("ipv6 edge-cases not supported")
+    def test_ipv6_edge_cases(self):
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8::'))
+        self.assertIsNotNone(is_absolute_uri('http://::1234:5678'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8::1234:5678'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8:3333:4444:5555:6666:7777:8888'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8:3333:4444:CCCC:DDDD:EEEE:FFFF'))
+        self.assertIsNotNone(is_absolute_uri('http://0123:4567:89ab:cdef:0123:4567:89ab:cdef/path'))
+        self.assertIsNotNone(is_absolute_uri('http://::'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:0db8:0001:0000:0000:0ab9:C0A8:0102'))
+
+    @unittest.skip("ipv6 dual ipv4 not supported")
+    def test_ipv6_dual(self):
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8:3333:4444:5555:6666:1.2.3.4'))
+        self.assertIsNotNone(is_absolute_uri('http://::11.22.33.44'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8::123.123.123.123'))
+        self.assertIsNotNone(is_absolute_uri('http://::1234:5678:91.123.4.56'))
+        self.assertIsNotNone(is_absolute_uri('http://::1234:5678:1.2.3.4'))
+        self.assertIsNotNone(is_absolute_uri('http://2001:db8::1234:5678:5.6.7.8'))
+
+    def test_ipv4(self):
         self.assertIsNotNone(is_absolute_uri('http://127.0.0.1:38432/'))
         self.assertIsNotNone(is_absolute_uri('http://127.0.0.1:38432/'))
         self.assertIsNotNone(is_absolute_uri('http://127.1:38432/'))
 
+    def test_failures(self):
         self.assertIsNone(is_absolute_uri('http://example.com:notaport/path'))
         self.assertIsNone(is_absolute_uri('wrong'))
         self.assertIsNone(is_absolute_uri('http://[:1]:38432/path'))
         self.assertIsNone(is_absolute_uri('http://[abcd:efgh::1]/'))
+
+    def test_malitious_semicolon(self):
+        self.assertIsNone(is_absolute_uri('http://[::::::::::::::::::::::::::]/path'))