CVE-2021-20308
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I. Basic Information for CVE-2021-20308
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Integer overflow in the htmldoc 1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service that is similar to CVE-2017-9181.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
HTMLDOC 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HTMLDOC是一款能够将HTML和Markdown文件转换为EPUB、索引HTML、PostScript和PDF等格式文件的开源程序。 htmldoc 1.9.11 存在安全漏洞，该漏洞允许攻击者执行任意代码并导致拒绝服务。
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 |
|---|---|---|---|---|
| - | htmldoc | htmldoc 1.9.11 and older | - |
II. Public POCs for CVE-2021-20308
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://bugzilla.redhat.com/show_bug.cgi?id=1946289x_refsource_MISC
- https://github.com/michaelrsweet/htmldoc/issues/423x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-20308
Same Patch Batch · n/a · 2021-04-05 · 15 CVEs total
| CVE-2021-30141 | Friendica 安全漏洞 | |
| CVE-2021-20307 | lianhaidong libpano13 格式化字符串错误漏洞 | |
| CVE-2021-20305 | Linux Nettle 缓冲区错误漏洞 | |
| CVE-2020-19595 | Core FTP 缓冲区错误漏洞 | |
| CVE-2020-19596 | Core FTP Server 缓冲区错误漏洞 | |
| CVE-2021-30109 | froala editor 跨站脚本漏洞 | |
| CVE-2021-30055 | Knowage SQL注入漏洞 | |
| CVE-2021-30056 | Knowage 跨站脚本漏洞 | |
| CVE-2021-30057 | Knowage 注入漏洞 | |
| CVE-2021-30058 | Knowage 跨站脚本漏洞 | |
| CVE-2021-29996 | Mark Text 跨站脚本漏洞 | |
| CVE-2021-29261 | svelte 安全漏洞 | |
| CVE-2021-28832 | VSCodeVim 安全漏洞 | |
| CVE-2020-17453 | WSO2 Management Console 跨站脚本漏洞 |
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-190
- CVE-2026-7568
Signed integer overflow in metaphone() - CVE-2026-42311
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Ove - CVE-2026-42308
Pillow: Integer overflow when processing fonts - CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsi - CVE-2026-42199
Grid: Integer Overflow in Grid::expand_rows Leads to Safe-AP
V. Comments for CVE-2021-20308
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