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CVE-2026-77387— geopy: Regular Expression Denial of Service (ReDoS) in geopy.Point

Quick assessment

Affected
geopy geopy
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.

geopy 是一个用于 Python 的地理编码库。在 2.5.0 版本之前，当应用程序传入一个长度超过修复措施中设定的 256 字符输入限制的错误坐标字符串时， 和 会因低效的正则表达式行为而消耗过多的 CPU 时间。此外，当以字符串作为输入调用 Geocoder 的反向地理编码方法时，也会触发存在漏洞的解析路径。攻击者通过重复发送受其控制的请求，可能导致拒绝服务（DoS）攻击；而使用数值参数调用 Point 构造函数则不受此问题影响。该漏洞已在 2.5.0 版本中修复。

CVSS 4.0 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-77387

Vulnerability Information
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Vulnerability Title
geopy: Regular Expression Denial of Service (ReDoS) in geopy.Point
Source: CVE Program / CVE List V5
Vulnerability Description
geopy is a geocoding library for Python. Prior to 2.5.0, geopy.Point and Point.from_string() can spend excessive CPU time due to inefficient regular-expression behavior when an application passes a long malformed coordinate string without the 256-character input limit used by the fix. Geocoder reverse methods also reach the vulnerable parsing path when called with string inputs. Repeated attacker-controlled requests can cause a denial of service, while the numeric Point constructor is unaffected. This issue is fixed in version 2.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
geopy geopy < 2.5.0 -

II. Public POCs for CVE-2026-77387

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III. Intelligence Information for CVE-2026-77387

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Patches & Fixes for CVE-2026-77387 (3)

Vendor Advisories for CVE-2026-77387 (1)

Vendor Pages for CVE-2026-77387 (1)

IV. Related Vulnerabilities

Same weakness: CWE-1333

V. Comments for CVE-2026-77387

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