See Bug 363458 and Bug 395198. The crash is fixed in Exiv2 0.27.0, but Neon has 0.26.0. It would be nice if you could upgrade to 0.27.0 to fix this crash for Neon users.
I hope it does not simply have 0.26.0 without any patches applied? Since its release more than a year ago a huge load of security bugs have been fixed, and backported to 0.26 branch upstream. In Gentoo we've been packaging snapshots from this branch all this time. Getting 0.27.0 is the best solution but most reverse-deps require patching or most recent versions (digikam-6.0.0_rc3 for one, not easily backportable). Here's our stabilisation tracker for reference, though it is still missing a few packages as mentioned in top comment.
https://bugs.gentoo.org/674968
*** Bug 408577 has been marked as a duplicate of this bug. ***
*** Bug 408954 has been marked as a duplicate of this bug. ***
I have sometimes a problem with gwenview freezing (a very, very long time, minutes, to open a file).
Neon now has 0.27.2. Closing.