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CVE-2026-33481— Syft improper temporary file cleanup

Quick assessment

Affected
anchore syft
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

syft是Anchore开源的用于从容器映像和文件系统生成软件物料清单 (SBOM) 的 CLI 工具和 Go 库。 Syft 1.42.3之前版本存在安全漏洞，该漏洞源于扫描错误时未正确清理临时存储，可能导致临时存储耗尽。

CVSS 5.3 · Medium EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-33481

Vulnerability Information
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Vulnerability Title
Syft improper temporary file cleanup
Source: CVE Program / CVE List V5
Vulnerability Description
Syft is a a CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems. Syft versions before v1.42.3 would not properly cleanup temporary storage if the temporary storage was exhausted during a scan. When scanning archives Syft will unpack those archives into temporary storage then inspect the unpacked contents. Under normal operation Syft will remove the temporary data it writes after completing a scan. This vulnerability would affect users of Syft that were scanning content that could cause Syft to fill the temporary storage that would then cause Syft to raise an error and exit. When the error is triggered Syft would exit without properly removing the temporary files in use. In our testing this was most easily reproduced by scanning very large artifacts or highly compressed artifacts such as a zipbomb. Because Syft would not clean up its temporary files, the result would be filling temporary file storage preventing future runs of Syft or other system utilities that rely on temporary storage being available. The patch has been released in v1.42.3. Syft now cleans up temporary files when an error condition is encountered. There are no workarounds for this vulnerability in Syft. Users that find their temporary storage depleted can manually remove the temporary files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
抛出异常的清理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
syft 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
syft是Anchore开源的用于从容器映像和文件系统生成软件物料清单 (SBOM) 的 CLI 工具和 Go 库。 Syft 1.42.3之前版本存在安全漏洞，该漏洞源于扫描错误时未正确清理临时存储，可能导致临时存储耗尽。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
anchore syft < 1.42.3 -

II. Public POCs for CVE-2026-33481

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III. Intelligence Information for CVE-2026-33481

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Patches & Fixes for CVE-2026-33481 (3)

Vendor Advisories for CVE-2026-33481 (1)

IV. Related Vulnerabilities

Same product: syft
Same vendor: anchore
Same weakness: CWE-460

V. Comments for CVE-2026-33481

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