GHSA-742w-89gc-8m9c: github.com/containerd/containerd (CVE-2020-15157)

Package	Ecosystem	Affected	Fixed in
github.com/containerd/containerd	Go	<1.2.14	1.2.14

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

containerd versions before 1.2.14 are vulnerable. When an image manifest points a layer to a URL on a server the attacker controls, the default resolver in the 1.2.x series sends its registry credentials to that server if it responds with HTTP 401 and registry-specific headers. An attacker needs only to publish a public image with such a manifest and get a user or system to pull it, which can expose registry or cloud instance credentials. Upgrade to containerd 1.2.14 or later; containerd 1.3 and later are not affected.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.1	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.023, the 83rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:45 UTC First seen by agentprime
31 Oct 2026, 14:45 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.