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CVE-2026-82820— FLVMeta AMF String Processing amf.c amf_string_new heap-based overflow

Quick assessment

Affected
n/a FLVMeta
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.

flvmeta是flvmeta个人开发者开源的一个FLV元数据处理工具。 flvmeta 1.2.2及之前版本存在缓冲区错误漏洞，该漏洞源于src/amf.c文件中的amf_string_new函数对参数length的操作不当，可能导致基于堆的缓冲区溢出，攻击者可远程利用该漏洞。

CVSS 4.3 · Medium EPSS 0.63% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
n/a FLVMeta 1.2.0 affected
1.2.1 affected
1.2.2 affected
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I. Basic Information for CVE-2026-82820

Vulnerability Information
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Vulnerability Title
FLVMeta AMF String Processing amf.c amf_string_new heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in FLVMeta up to 1.2.2. Affected is the function amf_string_new of the file src/amf.c of the component AMF String Processing. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as f412a33b9a84c2d1a9dee145a868feddbf64879e. A patch should be applied to remediate this issue. The project maintainer doubts the security impact: "While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
flvmeta 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
flvmeta是flvmeta个人开发者开源的一个FLV元数据处理工具。 flvmeta 1.2.2及之前版本存在缓冲区错误漏洞，该漏洞源于src/amf.c文件中的amf_string_new函数对参数length的操作不当，可能导致基于堆的缓冲区溢出，攻击者可远程利用该漏洞。
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
- FLVMeta 1.2.0 cpe:2.3:a:flvmeta:flvmeta:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82820

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III. Intelligence Information for CVE-2026-82820

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Patches & Fixes for CVE-2026-82820 (1)

Proof of Concept for CVE-2026-82820 (1)

Other References for CVE-2026-82820 (3)

Same Patch Batch · n/a · 2026-08-31 · 95 CVEs total

CVE-2026-82954 9.9 CRITICAL Dokploy Settings application.ts writeTraefikConfigInPath path traversal
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CVE-2026-82598 7.3 HIGH SeaCMS Template search.php parseIf code injection
CVE-2026-82630 7.3 HIGH PowerJob Transport Endpoint TestController.java MuConnectionManager.getOrCreateConnection
CVE-2026-82600 7.3 HIGH SeaCMS zyapi.php sql injection
CVE-2026-82603 5.4 MEDIUM SeaCMS Comment Cache member.php del_pl path traversal
CVE-2026-82599 5.4 MEDIUM SeaCMS Avatar Upload member.php unlink path traversal
CVE-2026-82623 5.3 MEDIUM open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange
CVE-2026-82602 5.3 MEDIUM SeaCMS ass.php authorization
CVE-2026-82821 4.3 MEDIUM FLVMeta AMF Object Parsing amf.c amf_object_get null pointer dereference
CVE-2026-82805 4.3 MEDIUM Typora Mermaid Rendering cross site scripting
CVE-2026-82601 4.3 MEDIUM SeaCMS err.php cross site scripting
CVE-2026-82596 3.3 LOW LatencyUtils PauseDetector LatencyStats.java LatencyStats.recordDetectedPause memory corru
CVE-2026-51725 TOTOLINK T6 权限许可和访问控制问题漏洞
CVE-2026-51728 TOTOLINK T6 安全漏洞
CVE-2026-51721 TOTOLINK T6 安全漏洞
CVE-2026-51722 TOTOLINK T6 安全漏洞
CVE-2026-51720 TOTOLINK T6 权限许可和访问控制问题漏洞
CVE-2026-51718 TOTOLINK T6 安全漏洞
CVE-2026-51719 TOTOLINK T6 安全漏洞

Showing top 20 of 95 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: FLVMeta
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2026-82820

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