Security Digest · Vulnerability record
CVE-2026-40982: Spring Cloud Config vulnerable to Path Traversal
Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-config-server module.
CVSS 9.1 Critical EPSS 0.8% · p57
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.8%, percentile 57: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 57% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
org.springframework.cloud:spring-cloud-config-server(Maven) >= 4.1.0, <= 4.1.9, no fixed version listed;org.springframework.cloud:spring-cloud-config-server(Maven) >= 4.2.0, <= 4.2.6, no fixed version listed;org.springframework.cloud:spring-cloud-config-server(Maven) >= 4.3.0, <= 4.3.2, fixed in 4.3.3;org.springframework.cloud:spring-cloud-config-server(Maven) >= 5.0.0, <= 5.0.2, fixed in 5.0.3. Check your lockfile, including transitive dependencies.
What it is
Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory traversal attack. Spring Cloud Config 3.1.x: affected from 3.1.0 through 3.1.13 (inclusive); upgrade to 3.1.14 or greater (Enterprise Support Only). Spring Cloud Config 4.1.x: affected from 4.1.0 through 4.1.9 (inclusive); upgrade to 4.1.10 or greater (Enterprise Support Only). Spring Cloud Config 4.2.x: affected from 4.2.0 through 4.2.6 (inclusive); upgrade to 4.2.7 or greater (Enterprise Support Only). Spring Cloud Config 4.3.x: affected from 4.3.0 through 4.3.2 (inclusive); upgrade to 4.3.3 or greater. Spring Cloud Config 5.0.x: affected from 5.0.0 through 5.0.2 (inclusive); upgrade to 5.0.3 or greater.
From the GitHub advisory
Spring Cloud Config allows applications to serve arbitrary text and binary files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory traversal attack. Spring Cloud Config 3.1.x: affected from 3.1.0 through 3.1.13 (inclusive); upgrade to 3.1.14 or greater (Enterprise Support Only). Spring Cloud Config 4.1.x: affected from 4.1.0 through 4.1.9 (inclusive); upgrade to 4.1.10 or greater (Enterprise Support Only). Spring Cloud Config 4.2.x: affected from 4.2.0 through 4.2.6 (inclusive); upgrade to 4.2.7 or greater (Enterprise Support Only). Spring Cloud Config 4.3.x: affected from 4.3.0 through 4.3.2 (inclusive); upgrade to 4.3.3 or greater. Spring Cloud Config 5.0.x: affected from 5.0.0 through 5.0.2 (inclusive); upgrade to 5.0.3 or greater.
Weakness type: CWE-22.
Product: org.springframework.cloud:spring-cloud-config-server (Maven) · Assigned by: vmware · Published: 2026-05-07
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Maven | org.springframework.cloud:spring-cloud-config-server | >= 4.1.0, <= 4.1.9 | none listed |
| Maven | org.springframework.cloud:spring-cloud-config-server | >= 4.2.0, <= 4.2.6 | none listed |
| Maven | org.springframework.cloud:spring-cloud-config-server | >= 4.3.0, <= 4.3.2 | 4.3.3 |
| Maven | org.springframework.cloud:spring-cloud-config-server | >= 5.0.0, <= 5.0.2 | 5.0.3 |
| Maven | org.springframework.cloud:spring-cloud-config-server | <= 3.1.13 | none listed |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Spring | Spring Cloud Config | 3.1.0 < 3.1.14, 4.1.0 < 4.1.10, 4.2.0 < 4.2.7, 4.3.0 < 4.3.3, 5.0.0 < 5.0.3 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| vmware | 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| redhat-SADP | 3.1 | 8.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.82% probability of exploitation activity in the next 30 days; percentile 57.
Timeline
- — CVE record published by vmware
- — GitHub-reviewed advisory GHSA-6g23-24mc-hx6x published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-6g23-24mc-hx6x github.com
- CVE.org record CVE-2026-40982 cve.org
- NVD entry CVE-2026-40982 nvd.nist.gov
Other references from the CVE record and advisory
- spring.io spring.io
- access.redhat.com access.redhat.com
- RHBZ#2467619 bugzilla.redhat.com
- security.access.redhat.com security.access.redhat.com