Vulnerability · Published Jul 6, 2026 · Assigned by CPANSec
CVE-2026-13705Imager versions before 1.032 for Perl have a heap out-of-bounds read in the bundled Imager::File::SGI reader via a 16-bit RLE literal run in read_rgb_16_rle
High 7.1
In plain English
A high-severity out-of-bounds read in Imager from TONYC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Imager versions before 1.032 for Perl have a heap out-of-bounds read in the bundled Imager::File::SGI reader via a 16-bit RLE literal run in read_rgb_16_rle. read_rgb_16_rle guards each literal run with if (count > data_left), but count is a pixel count while every 16-bit sample consumes two bytes. The copy loop reads inp[0] * 256 + inp[1] and advances two bytes per pixel, so a run with data_left / 2 < count <= data_left passes the guard yet consumes 2 * count bytes and reads past the end of the buffer. The 8-bit path is unaffected because there one pixel is one byte. Reading a crafted SGI image through Imager->read triggers the over-read before the parser rejects the malformed image, which can crash the process.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libimager-perl | no fix listed | DEBIAN-CVE-2026-13705 |
| Debian:13 | libimager-perl | no fix listed | DEBIAN-CVE-2026-13705 |
| Debian:14 | libimager-perl | 1.032+dfsg-1 | DEBIAN-CVE-2026-13705 |
| Ubuntu:22.04:LTS | libimager-perl | no fix listed | UBUNTU-CVE-2026-13705 |
| Ubuntu:24.04:LTS | libimager-perl | no fix listed | UBUNTU-CVE-2026-13705 |
| Ubuntu:25.10 | libimager-perl | no fix listed | UBUNTU-CVE-2026-13705 |
| Ubuntu:26.04:LTS | libimager-perl | no fix listed | UBUNTU-CVE-2026-13705 |
| Ubuntu:26.10 | libimager-perl | no fix listed | UBUNTU-CVE-2026-13705 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H