Medium severity · published Mar 25, 2026
CVE-2026-33809
OOM from malicious IFD offset in golang.org/x/image/tiff
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
golang.org/x/image/tiff · golang.org/x/image
before 0.38.0 · source: vendor
TI
Tiff · Golang
before 0.38.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33809
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33809
Mailing List
https://go.dev/cl/757660
Issue Tracking
https://go.dev/issue/78267
Vendor Advisory
https://pkg.go.dev/vuln/GO-2026-4815
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7.5
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Panic decoding image with out-of-bounds strip offset in x/image/tiff in golang.org/x/image
7.5
CVE-2026-46602
Lack of limit on tile sizes in x/image/tiff in golang.org/x/image
7.5
CVE-2026-46599
Excessive resource consumption in PackBits decompression in golang.org/x/image/tiff