CVE-2026-102993— pypdf: Possible large memory usage when retrieving Roman page labels
一分钟漏洞结论
影响对象
py-pdf pypdf
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document pa
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一、 漏洞 CVE-2026-102993 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
pypdf: Possible large memory usage when retrieving Roman page labels
来源: CVE Program / CVE List V5
Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-102993 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-102993 其他参考 (4)
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https://github.com/py-pdf/pypdf/pull/4047 x_refsource_MISC
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https://github.com/py-pdf/pypdf/releases/tag/6.17.0 x_refsource_MISC
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https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285 x_refsource_CONFIRM
同批安全公告 · py-pdf · 2026-09-30 · 共 8 条
| CVE-2026-102998 | 8.7 HIGH | pypdf: Possible long runtimes when generating appearance streams |
| CVE-2026-102995 | 8.7 HIGH | pypdf: Possible large memory usage for large /ToUnicode streams (Follow-up 2) |
| CVE-2026-102997 | 8.7 HIGH | pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up) |
| CVE-2026-102994 | 8.7 HIGH | pypdf: Possible long runtimes/large memory usage when parsing indirect objects |
| CVE-2026-102996 | 8.7 HIGH | pypdf: Possible large memory usage when parsing font data |
| CVE-2026-102999 | 8.7 HIGH | pypdf: Possible long runtimes with large amount of embedded files |
| CVE-2026-103000 | 8.7 HIGH | pypdf: Possible large memory usage when retrieving alphabetical page labels |
IV. Related Vulnerabilities
Same product: pypdf
-
CVE-2026-103000
pypdf: Possible large memory usage when retrieving alphabeti -
CVE-2026-102999
pypdf: Possible long runtimes with large amount of embedded -
CVE-2026-102998
pypdf: Possible long runtimes when generating appearance str -
CVE-2026-102997
pypdf: Possible long runtimes for partially malformed FlateD -
CVE-2026-102996
pypdf: Possible large memory usage when parsing font data
Same vendor: py-pdf
-
CVE-2026-103000
pypdf: Possible large memory usage when retrieving alphabeti -
CVE-2026-102999
pypdf: Possible long runtimes with large amount of embedded -
CVE-2026-102998
pypdf: Possible long runtimes when generating appearance str -
CVE-2026-102997
pypdf: Possible long runtimes for partially malformed FlateD -
CVE-2026-102996
pypdf: Possible large memory usage when parsing font data
Same weakness: CWE-400
-
CVE-2026-103000
pypdf: Possible large memory usage when retrieving alphabeti -
CVE-2026-102999
pypdf: Possible long runtimes with large amount of embedded -
CVE-2026-102998
pypdf: Possible long runtimes when generating appearance str -
CVE-2026-102997
pypdf: Possible long runtimes for partially malformed FlateD -
CVE-2026-102996
pypdf: Possible large memory usage when parsing font data
V. Comments for CVE-2026-102993
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