diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 `jira-wiki-markup` uses [PVP Versioning][1].
 The changelog is available [on GitHub][2].
 
+1.5.1
+-----
+
+Released 2023-03-13.
+
+* Parser: Disallow image paths that start with a space.
+
 1.5.0
 -----
 
diff --git a/jira-wiki-markup.cabal b/jira-wiki-markup.cabal
--- a/jira-wiki-markup.cabal
+++ b/jira-wiki-markup.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.4
 name:                jira-wiki-markup
-version:             1.5.0
+version:             1.5.1
 synopsis:            Handle Jira wiki markup
 description:         Parse jira wiki text into an abstract syntax tree for easy
                      transformation to other formats.
diff --git a/src/Text/Jira/Parser/Inline.hs b/src/Text/Jira/Parser/Inline.hs
--- a/src/Text/Jira/Parser/Inline.hs
+++ b/src/Text/Jira/Parser/Inline.hs
@@ -35,7 +35,7 @@
   ) where
 
 import Control.Monad (guard, void)
-import Data.Char (isAlphaNum, isAscii, isPunctuation, ord)
+import Data.Char (isAlphaNum, isAscii, isPunctuation, isSpace, ord)
 #if !MIN_VERSION_base(4,13,0)
 import Data.Monoid ((<>), All (..))
 #else
@@ -155,7 +155,9 @@
 image :: JiraParser Inline
 image = try $ do
   -- does not use @url@, as is may contain relative locations.
-  src <- char '!' *> (URL . pack <$> many1 (noneOf "\r\t\n|]!"))
+  src <- char '!'
+         *> lookAhead (satisfy $ not . isSpace)
+         *> (URL . pack <$> many1 (noneOf "\r\t\n|]!"))
   params <- option [] (char '|' *> (thumbnail <|> imgParams `sepBy` comma))
   _ <- char '!'
   return $ Image params src
diff --git a/test/Text/Jira/Parser/InlineTests.hs b/test/Text/Jira/Parser/InlineTests.hs
--- a/test/Text/Jira/Parser/InlineTests.hs
+++ b/test/Text/Jira/Parser/InlineTests.hs
@@ -344,6 +344,10 @@
         parseJira image "!foo.jpg|alt=\"some foo!\"!" @?=
         let params = [ Parameter "alt" "some foo!"]
         in Right (Image params (URL "foo.jpg"))
+
+      , testCase "first character cannot be a space" $
+        isLeft (parseJira image "! foo.jpg!") @?
+        "An image cannot start with a space."
       ]
 
     , testGroup "color"