CVE-2023-26483— gosaml2 vulnerable to Denial of Service via deflate decompression bomb
Quick assessment
Affected
russellhaering gosaml2
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.
gosaml2是一个应用软件。提供了一个基于etree 和goxmldsig（纯XML数字签名的Go实现）的服务提供商的SAML 2.0实现功能。 gosaml2存在安全漏洞，该漏洞源于在处理过程中会消耗比原始请求大得多的内存，从而导致内存耗尽和进程被杀死。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2023-26483
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
gosaml2 vulnerable to Denial of Service via deflate decompression bomb
Source: CVE Program / CVE List V5
Vulnerability Description
gosaml2 is a Pure Go implementation of SAML 2.0. SAML Service Providers using this library for SAML authentication support are likely susceptible to Denial of Service attacks. A bug in this library enables attackers to craft a `deflate`-compressed request which will consume significantly more memory during processing than the size of the original request. This may eventually lead to memory exhaustion and the process being killed. The maximum compression ratio achievable with `deflate` is 1032:1, so by limiting the size of bodies passed to gosaml2, limiting the rate and concurrency of calls, and ensuring that lots of memory is available to the process it _may_ be possible to help Go's garbage collector "keep up". Implementors are encouraged not to rely on this. This issue is fixed in version 0.9.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
gosaml2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gosaml2是一个应用软件。提供了一个基于etree 和goxmldsig（纯XML数字签名的Go实现）的服务提供商的SAML 2.0实现功能。 gosaml2存在安全漏洞，该漏洞源于在处理过程中会消耗比原始请求大得多的内存，从而导致内存耗尽和进程被杀死。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| russellhaering | gosaml2 | < 0.9.0 | - |
|
II. Public POCs for CVE-2023-26483
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2023-26483
请登录查看更多情报信息。
Patches & Fixes for CVE-2023-26483 (1)
Other References for CVE-2023-26483 (2)
-
https://pkg.go.dev/vuln/GO-2023-1602 x_refsource_MISC
-
https://github.com/russellhaering/gosaml2/releases/tag/v0.9.0 x_refsource_MISC
IV. Related Vulnerabilities
Same weakness: CWE-409
-
CVE-2026-105274
hex_core decompresses registry and Erlang term API responses -
CVE-2026-109324
Grav before 2.1.7 Memory Exhaustion via Oversized Image Tran -
CVE-2026-96618
Hex exhausts memory and disk on oversized or compressed resp -
CVE-2026-109398
Gumlet php-image-resize before 3.0.1 Denial of Service via D -
CVE-2026-109229
SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotro
V. Comments for CVE-2023-26483
No comments yet