CVE-2025-61723— Quadratic complexity when parsing some invalid inputs in encoding/pem
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I. Basic Information for CVE-2025-61723
Vulnerability Information
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Vulnerability Title
Quadratic complexity when parsing some invalid inputs in encoding/pem
Source: NVD (National Vulnerability Database)
Vulnerability Description
The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Google Go encoding 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go encoding是美国谷歌（Google）公司的一个基于Go语言为数据提供多种形式编码的代码库。 Google Go encoding存在安全漏洞，该漏洞源于解析某些无效输入时处理时间与输入大小非线性相关，可能导致拒绝服务攻击。
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 |
|---|---|---|---|---|
| Go standard library | encoding/pem | 0 ~ 1.24.8 | - |
II. Public POCs for CVE-2025-61723
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Advisory · 1
Same Patch Batch · Go standard library · 2025-10-29 · 10 CVEs total
| CVE-2025-58187 | Quadratic complexity when checking name constraints in crypto/x509 | |
| CVE-2025-58186 | Lack of limit when parsing cookies can cause memory exhaustion in net/http | |
| CVE-2025-58183 | Unbounded allocation when parsing GNU sparse map in archive/tar | |
| CVE-2025-58188 | Panic when validating certificates with DSA public keys in crypto/x509 | |
| CVE-2025-58189 | ALPN negotiation error contains attacker controlled information in crypto/tls | |
| CVE-2025-58185 | Parsing DER payload can cause memory exhaustion in encoding/asn1 | |
| CVE-2025-47912 | Insufficient validation of bracketed IPv6 hostnames in net/url | |
| CVE-2025-61725 | Excessive CPU consumption in ParseAddress in net/mail | |
| CVE-2025-61724 | Excessive CPU consumption in Reader.ReadResponse in net/textproto |
IV. Related Vulnerabilities
Same vendor: Go standard library
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Bypass of meta content URL escaping causes XSS in html/templ - CVE-2026-39820
Quadratic string concatentation in consumeComment in net/mai - CVE-2026-42499
Quadratic string concatenation in consumePhrase in net/mail - CVE-2026-33811
Crash when handling long CNAME response in net - CVE-2026-39826
Escaper bypass leads to XSS in html/template
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