CVE-2021-20270
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I. Basic Information for CVE-2021-20270
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Ansible Automation 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Ansible Automation是 （Red Hat）开源的一个应用软件。提供一个自动化基础架构的各个方面，从服务器和网络设备到操作系统，应用程序和安全性。 Red Hat Ansible Automation 存在安全漏洞，该漏洞源于无限循环可能导致DoS。
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 |
|---|---|---|---|---|
| - | python-pygments | python-pygments 2.7.4 | - |
II. Public POCs for CVE-2021-20270
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=1922136x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-20270
Same Patch Batch · n/a · 2021-03-23 · 39 CVEs total
| CVE-2021-29068 | 9.9 CRITICAL | Netgear NETGEAR 缓冲区错误漏洞 |
| CVE-2021-29066 | 9.6 CRITICAL | Netgear NETGEAR 授权问题漏洞 |
| CVE-2021-29067 | 9.6 CRITICAL | Netgear NETGEAR 授权问题漏洞 |
| CVE-2021-29065 | 9.6 CRITICAL | Netgear NETGEAR RBR850 授权问题漏洞 |
| CVE-2021-29071 | 9.6 CRITICAL | Netgear NETGEAR 命令注入漏洞 |
| CVE-2021-29076 | 9.6 CRITICAL | Netgear NETGEAR 命令注入漏洞 |
| CVE-2021-29077 | 9.6 CRITICAL | 多款Netgear产品命令注入漏洞 |
| CVE-2021-29078 | 9.6 CRITICAL | 多款Netgear产品命令注入漏洞 |
| CVE-2021-29079 | 9.6 CRITICAL | Netgear NETGEAR 命令注入漏洞 |
| CVE-2021-29082 | 9.6 CRITICAL | 多款Netgear产品信息泄露漏洞 |
| CVE-2021-29075 | 8.4 HIGH | 多款Netgear产品缓冲区错误漏洞 |
| CVE-2021-29074 | 8.4 HIGH | NETGEAR 多款产品缓冲区错误漏洞 |
| CVE-2021-29072 | 8.4 HIGH | Netgear NETGEAR 命令注入漏洞 |
| CVE-2021-29070 | 8.4 HIGH | Netgear NETGEAR 命令注入漏洞 |
| CVE-2021-29081 | 8.4 HIGH | 多款Netgear产品缓冲区错误漏洞 |
| CVE-2021-29080 | 8.1 HIGH | Netgear NETGEAR 授权问题漏洞 |
| CVE-2021-29073 | 7.6 HIGH | Netgear NETGEAR 缓冲区错误漏洞 |
| CVE-2020-28503 | 7.3 HIGH | Prototype Pollution |
| CVE-2021-29069 | 7.3 HIGH | 多款Netgear产品命令注入漏洞 |
| CVE-2021-23362 | 5.3 MEDIUM | Regular Expression Denial of Service (ReDoS) |
Showing top 20 of 39 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: n/a
- CVE-2026-8276
bettercap MySQL Server mysql_server.go integer coercion - CVE-2026-8275
bettercap zerogod IPP Service zerogod_ipp_primitives.go ippR - CVE-2026-8270
Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
Same weakness: CWE-835
- CVE-2026-42310
Pillow: PDF Parsing Trailer Infinite Loop (DoS) - CVE-2026-41511
OpenMcdf has an Infinite loop DoS via crafted CFB directory - CVE-2026-5407
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6536
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6534
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi
V. Comments for CVE-2021-20270
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