Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-47836— Spring Cloud Config Server Susceptible To TOCTOU Attack When Using SVN

Quick assessment

Affected
Spring Spring Cloud Config
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.

Spring Cloud Config Server 用于克隆 SVN 仓库的基础目录（ ）容易受到“检查时刻与使用时刻”（Time-of-Check-Time-of-Use, TOCTOU）攻击的影响。 受影响版本： Spring Cloud Config 5.0.0 至 5.0.4 Spring Cloud Config 4.3.0 至 4.3.4 Spring Cloud Config 4.0.0 至 4.2.8 Spring Cloud Config 3.1.14 及更早版本

CVSS 7.2 · High

Affected Version Matrix 4

VendorProduct Version RangeStatus
Spring Spring Cloud Config 5.0.0≤ 5.0.4 affected
4.3.0≤ 4.3.4 affected
4.0.0≤ 4.2.8 affected
≤ 3.1.14 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-47836

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Spring Cloud Config Server Susceptible To TOCTOU Attack When Using SVN
Source: CVE Program / CVE List V5
Vulnerability Description
The base directory (spring.cloud.config.server.svn.basedir) used by the Spring Cloud Config Server to clone SVN repositories to is susceptible to time-of-check-time-of-use (TOCTOU) attacks. Spring Cloud Config 5.0.0 - 5.0.4 Spring Cloud Config 4.3.0 - 4.3.4 Spring Cloud Config 4.0.0 - 4.2.8 Spring Cloud Config 3.1.14 and earlier
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring Cloud Config 5.0.0 ~ 5.0.4 -

II. Public POCs for CVE-2026-47836

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-47836

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-47836 (1)

Same Patch Batch · Spring · 2026-08-26 · 20 CVEs total

CVE-2026-47852 7.5 HIGH Predictable cache directory location allows local ONNX model substitution in Spring AI
CVE-2026-47851 7.5 HIGH Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Re
CVE-2026-47841 7.4 HIGH WebAuthn User Verification Bypass via Session Serialization
CVE-2026-47837 6.8 MEDIUM Spring Cloud Config Server Monitor Endpoint Does Not Validate Webhook Requests
CVE-2026-47842 6.5 MEDIUM Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Co
CVE-2026-47860 6.5 MEDIUM Unbounded decompression of attacker-supplied compressed message bodies
CVE-2026-47861 6.3 MEDIUM UDP adapter sends ack to attacker-supplied host:port parsed from packet body, even when ac
CVE-2026-47856 6.3 MEDIUM JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class w
CVE-2026-47848 6.1 MEDIUM Reactor Netty WebSocket Client Leaks Credentials On Redirect
CVE-2026-47863 5.9 MEDIUM Reactor Core bufferTimeout fair-backpressure pipeline permanently hangs when upstream deli
CVE-2026-47857 5.9 MEDIUM Reactor Core windowTimeout fair-backpressure stream hang due to 20-bit index wrap-around
CVE-2026-47862 5.4 MEDIUM ZipTransformer uses file_name header to build workDirectory path without sanitization
CVE-2026-47859 5.4 MEDIUM Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote
CVE-2026-47844 5.3 MEDIUM Reactor Netty HTTP Server Leaks Exception Details
CVE-2026-47845 5.3 MEDIUM Reactor Netty HTTP Server may incorrectly evaluate proxy addresses
CVE-2026-47874 5.3 MEDIUM Reactor Netty HTTP Server Denial of Service With Pipelined Requests
CVE-2026-47834 4.8 MEDIUM Spring Data JPA Sort expression validation bypass
CVE-2026-47850 4.3 MEDIUM Spring Data REST allows mutation of the version property of immutable aggregates via PUT
CVE-2026-47843 3.7 LOW Reactor Netty may incorrectly route traffic due to DNS resolver reuse

IV. Related Vulnerabilities

Same product: Spring Cloud Config
Same vendor: Spring

V. Comments for CVE-2026-47836

No comments yet

Leave a comment