CVE-2026-56860
Vulnerability Summary
Timeline
Description
Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.
CVSS Metrics
- v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Trends
Current EPSS score: 0.52%• Percentile: 43%
Techniques & Countermeasures
- CWE-407•Inefficient Algorithmic Complexity
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Affected Systems
- chainguard•aactl
< 0.4.12-r68
- chainguard•actions-runner-controller-fips
< 0.14.2-r7
- chainguard•addon-resizer
< 1.8.24-r1
- chainguard•age
< 0
- chainguard•age-fips
< 0
- chainguard•agentbeat-fips
< 9.2.7-r21
- chainguard•amass
< 5.1.1-r12
- chainguard•amazon-cloudwatch-agent
< 1.300072.0-r1
- chainguard•amazon-cloudwatch-agent-amazon-cloudwatch-agent-config-wizard
< 0
- chainguard•amazon-cloudwatch-agent-amazon-cloudwatch-agent-config-wizard-fips
< 0
- chainguard•amazon-cloudwatch-agent-config-downloader
< 0
- chainguard•amazon-cloudwatch-agent-config-downloader-fips
< 0
- chainguard•amazon-cloudwatch-agent-config-translator
< 0
- chainguard•amazon-cloudwatch-agent-config-translator-fips
< 0
- chainguard•amazon-cloudwatch-agent-fips
< 1.300072.0-r1
- chainguard•amazon-cloudwatch-agent-operator
< 3.7.0-r1
- chainguard•amazon-cloudwatch-agent-start-amazon-cloudwatch-agent
< 0
- chainguard•amazon-cloudwatch-agent-start-amazon-cloudwatch-agent-fips
< 0
- chainguard•amazon-ecs-agent-fips
< 0 | < 1.106.0-r3
- chainguard•amazon-ecs-cni-plugins
< 2024.9.0_git20260617-r3 | < 0
- chainguard•amazon-ecs-cni-plugins-fips
< 2024.9.0_git20260617-r5 | < 0
- chainguard•amazon-eks-ami-fips
< 20260810-r0
- chainguard•amazon-k8s-cni
< 0 | < 1.23.0-r1
- chainguard•amazon-k8s-cni-fips
< 0 | < 1.23.0-r1
- chainguard•amazon-k8s-cni-init
< 1.23.0-r1
- chainguard•amazon-k8s-cni-init-fips
< 1.23.0-r1
- chainguard•amazon-k8s-cni-init-fips-compat
< 1.23.0-r1 | < 0
- chainguard•amazon-ssm-agent
< 0 | < 3.3.4851.0-r3
- chainguard•amazon-ssm-agent-ecs-exec
< 3.3.4851.0-r3
- chainguard•amazon-ssm-agent-ecs-exec-fips
< 3.3.4851.0-r3
- chainguard•amazon-ssm-agent-fips
< 0 | < 3.3.4851.0-r3
- chainguard•amazon-vpc-cni-plugins
< 0
- chainguard•ansible-operator
< 1.42.3-r10
- chainguard•ansible-operator-fips
< 1.42.3-r7
- chainguard•apache-beam-java-11-sdk
< 2.75.0-r2
- chainguard•apache-beam-java-17-sdk
< 2.75.0-r2
- chainguard•apache-beam-java-21-sdk
< 2.75.0-r2
- chainguard•apache-beam-python-3.13-sdk
< 2.75.0-r5
- chainguard•apache-beam-python-3.14-sdk
< 2.75.0-r2
- chainguard•apiserver-network-proxy-0.35
< 0.35.0-r4
- chainguard•apiserver-network-proxy-0.35-agent
< 0.35.0-r4
- chainguard•apiserver-network-proxy-0.36
< 0.36.0-r4
- chainguard•apiserver-network-proxy-0.36-agent
< 0.36.0-r4
- chainguard•apiserver-network-proxy-fips-0.34
< 0.34.0-r8
- chainguard•apiserver-network-proxy-fips-0.34-agent
< 0.34.0-r8
- chainguard•apiserver-network-proxy-fips-0.35
< 0.35.0-r7
- chainguard•apiserver-network-proxy-fips-0.35-agent
< 0.35.0-r7
- chainguard•apiserver-network-proxy-fips-0.36
< 0.36.0-r9
- chainguard•apiserver-network-proxy-fips-0.36-agent
< 0.36.0-r9
- chainguard•apko-fips
< 1.2.36-r1
Showing first 50 affected entries in server-rendered view.
References (8)
- https://go.dev/cl/803681
- https://go.dev/issue/80494
- https://groups.google.com/g/golang-announce/c/94pEornpRlI
- https://pkg.go.dev/vuln/GO-2026-6218
- https://security-tracker.debian.org/tracker/CVE-2026-56860
- https://ubuntu.com/security/CVE-2026-56860
- https://www.cve.org/CVERecord?id=CVE-2026-56860
- https://github.com/golang/go/issues/80494