CVE-2026-33809

FAUCET Score

CVE-2026-33809 describes a vulnerability in golang.org/x/image/tiff where a maliciously crafted TIFF file can trigger an attempt to allocate up to 4GiB of memory. Rated Medium (CVSS 5.3), this can be exploited remotely without authentication or user interaction, leading to excessive resource consumption or an out-of-memory error. There is currently no evidence of active exploitation, public exploit code, or significant media coverage, though it has received minor community discussion.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 0.38.0CPE matchmatch criteria	cpe:2.3:a:golang:tiff::::::go::*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

1.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.33%

Probability of exploitation in next 30 days

EPSS Percentile

25.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0033 is in the 15th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa

Product: golang.org/x/imageFixed in: 0.38.0

Vendor Advisories (1)

goGHSA-44p7-9xx4-hf2gmedium

Go Images vulnerable to an out-of-memory error via a crafted TIFF file

Mar 25, 2026

References

go.dev / cl/757660

Mailing List

go.dev / issue/78267

Issue Tracking

pkg.go.dev / vuln/GO-2026-4815

Vendor Advisory