CVE-2026-14454: TONYC Imager unsigned to signed conversion error in EXIF parsing

CVE-2026-14454 · Severity: info · CVSS 3.3 · Published 2026-07-08

Imager, a Perl library used for image processing and manipulation, contains a flaw in how it handles metadata (EXIF data) in image files. An attacker can provide a specially crafted image that, when processed by the library, causes the application to crash by attempting to allocate an impossible amount of memory. This results in a denial-of-service, potentially stopping web servers or background tasks that process user-uploaded images.

Technologies: Tony Cook Imager. Vendors: Tony Cook.

Quick answers

Is CVE-2026-14454 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-14454 being exploited in the wild.
How severe is CVE-2026-14454?
Informational severity, with a CVSS score of 3.3, published 8 July 2026.
Which products and versions are affected?
Tony Cook Imager before 1.033.
Is there a fix for CVE-2026-14454?
A patch was published on 2026-07-04: Fix committed to repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-14454 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-14454?
Check whether you run Tony Cook Imager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A signedness error (CWE-196) exists in the EXIF parsing logic of Imager (specifically in `imexif.c`). The library treats unsigned EXIF Image File Directory (IFD) entry counts as signed integers. When a large value is encountered, it is interpreted as a negative number, which subsequently leads to an excessive memory allocation request (CWE-789) near the size of the address space. This allocation failure triggers a process crash. An attacker can exploit this by providing a crafted image with malicious EXIF metadata to cause a Denial of Service (DoS). The issue is fixed in version 1.033 by updating the relevant types to `unsigned` and `size_t`.

Affected products

  • TONYC (Perl CPAN) Imager before 1.033

Timeline

  • 2026-07-04: patched: Fix committed to repository
  • 2026-07-08: disclosed: CVE published

References

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