🛡️ CVE-2023-45286 — resty

🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-200 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

HTTP request body disclosure in github.com/go-resty/resty/v2

A race condition in go-resty can result in HTTP request body disclosure across requests.

This condition can be triggered by calling sync.Pool.Put with the same *bytes.Buffer more than once, when request retries are enabled and a retry occurs. The call to sync.Pool.Get will then return a bytes.Buffer that hasn't had bytes.Buffer.Reset called on it. This dirty buffer will contain the HTTP request body from an unrelated request, and go-resty will append the current HTTP request body to it, sending two bodies in one request.

The sync.Pool in question is defined at package level scope, so a completely unrelated server could receive the request body.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2023-45286 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.

Affected software

CVE-2023-45286 is recorded against 2 packages.

  • github.com/go-resty/resty/v2
  • resty (fixed in 2.10.0)

Timeline and source

Published on 28 November 2023 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
pkg.go.dev (Web)

CVE-2023-45286 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-200
Public Exploit ✅ No
Source NVD
Published 2023-11-28
Updated 2026-08-12
Modified 2026-02-04

Affected Packages

Software From version Fixed in
github.com/go-resty/resty/v2 — —
resty — 2.10.0

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