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CVE-2026-74767— Unbounded DAA Decompression in Pandora Allows Denial of Service via Decompression Bomb

Quick assessment

Affected
pandora-analysis pandora
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pandora analysis Pandora是Pandora analysis组织开源的一个分析框架，用于发现文件是否可疑，并方便地显示结果。 Pandora analysis Pandora 1.12.5及之前版本存在任意文件上传漏洞，该漏洞源于处理DAA文件时未限制解压数据大小，可能导致攻击者通过提交特制DAA文件造成过度内存消耗和CPU耗尽，引起拒绝服务。

CVSS 8.7 · High EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
pandora-analysis pandora ≤ 1.12.5 affected
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I. Basic Information for CVE-2026-74767

Vulnerability Information
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Vulnerability Title
Unbounded DAA Decompression in Pandora Allows Denial of Service via Decompression Bomb
Source: CVE Program / CVE List V5
Vulnerability Description
Pandora contains a denial-of-service vulnerability in its handling of DAA (Direct Access Archive) files. When extracting the internal ISO image from a DAA archive, compressed chunks were decompressed using zlib.decompress() without enforcing a limit on the resulting uncompressed data. An attacker able to submit a crafted DAA file containing highly compressed data could cause Pandora to decompress a relatively small input into a very large amount of data in memory. Because the decompressed chunks are accumulated to construct the internal ISO image, this could result in excessive memory consumption and potentially CPU exhaustion, causing the extraction worker to become unresponsive, terminate, or affect the availability of the Pandora service. The patch introduces bounded decompression using decompressobj().decompress() with max_extracted_filesize, verifies the cumulative size of decompressed chunks, and raises a dedicated ZipBomb exception when the configured limit is exceeded. Pandora then aborts extraction and reports the file as too large.
Source: 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:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Pandora analysis Pandora 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pandora analysis Pandora是Pandora analysis组织开源的一个分析框架，用于发现文件是否可疑，并方便地显示结果。 Pandora analysis Pandora 1.12.5及之前版本存在任意文件上传漏洞，该漏洞源于处理DAA文件时未限制解压数据大小，可能导致攻击者通过提交特制DAA文件造成过度内存消耗和CPU耗尽，引起拒绝服务。
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
pandora-analysis pandora 0 ~ 1.12.5 -

II. Public POCs for CVE-2026-74767

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 11850 chars
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III. Intelligence Information for CVE-2026-74767

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Patches & Fixes for CVE-2026-74767 (1)

IV. Related Vulnerabilities

Same product: pandora
Same vendor: pandora-analysis
Same weakness: CWE-434

V. Comments for CVE-2026-74767

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