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CVE-2026-61652— Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)

一分钟漏洞结论

影响对象
kap-sh zapros
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。

Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service via memory exhaustion. The issue affects all callers who streamed compressed responses relying on the chunk size — explicit ( ) or the default — to bound memory. The decod

CVSS 8.7 · High EPSS 0.26% · P18

影响版本矩阵 1

厂商产品 版本范围状态
kap-sh zapros < 0.14.0 affected
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一、 漏洞 CVE-2026-61652 基础信息

漏洞信息

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Vulnerability Title
Zapros: Streaming decoders ignored the requested chunk size, allowing a single compressed response chunk to allocate unbounded memory (decompression bomb)
来源: CVE Program / CVE List V5
Vulnerability Description
Zapros, a Python HTTP client, prior to version 0.14.0 is vulnerable to denial of service via memory exhaustion. The issue affects all callers who streamed compressed responses relying on the chunk size — explicit (`iter_bytes(chunk_size=...)`) or the default — to bound memory. The decoder ignored that bound, so a chunk could be far larger than requested and a single compressed response could overflow memory. Version 0.14.0 contains a patch. Some workarounds are available. Read the still-compressed body with `Response.iter_raw()` / `Response.async_iter_raw()`, which bypass the built-in decoders, and decompress it yourself with an explicit output-size bound (e.g. `zlib`'s `max_length`), aborting once a configured limit is exceeded. Where feasible, send `Accept-Encoding: identity` to disable response compression so bodies are not decompressed client-side. Avoid decoding response bodies from untrusted servers.
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
不加限制或调节的资源分配
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
kap-sh zapros < 0.14.0 -

二、漏洞 CVE-2026-61652 的公开POC

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三、漏洞 CVE-2026-61652 的情报信息

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CVE-2026-61652 其他参考 (1)

IV. Related Vulnerabilities

Same product: zapros
Same vendor: kap-sh
Same weakness: CWE-770

V. Comments for CVE-2026-61652

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