CVE-2026-41642— GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute
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I. Basic Information for CVE-2026-41642
Vulnerability Information
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Vulnerability Title
GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute
Source: NVD (National Vulnerability Database)
Vulnerability Description
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
GoBGP 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GoBGP是osrg开源的一种开源的边界网关协议（BGP）实现。 GoBGP 4.3.0版本存在代码问题漏洞，该漏洞源于处理包含未识别Well-known路径属性的畸形BGP UPDATE消息时出现空指针取消引用，可能导致远程拒绝服务。
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
II. Public POCs for CVE-2026-41642
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8942 chars
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III. Intelligence Information for CVE-2026-41642
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Same Patch Batch · osrg · 2026-05-07 · 3 CVEs total
| CVE-2026-41643 | 7.5 HIGH | GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE |
| CVE-2026-42285 | 7.5 HIGH | GoBGP: Panic in AdjRib.Update via malformed BGP Update message (Nil Pointer Dereference) |
IV. Related Vulnerabilities
Same product: gobgp
- CVE-2026-41643
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4B - CVE-2026-42285
GoBGP: Panic in AdjRib.Update via malformed BGP Update messa - CVE-2026-7737
osrg GoBGP BMP Parser bmp.go BMPStatisticsReport.ParseBody o - CVE-2026-7736
osrg GoBGP mrt.go parseRibEntry integer underflow - CVE-2026-7735
osrg GoBGP AIGP Attribute bgp.go PathAttributeAigp.DecodeFro
Same vendor: osrg
- CVE-2026-41643
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4B - CVE-2026-42285
GoBGP: Panic in AdjRib.Update via malformed BGP Update messa - CVE-2026-7737
osrg GoBGP BMP Parser bmp.go BMPStatisticsReport.ParseBody o - CVE-2026-7736
osrg GoBGP mrt.go parseRibEntry integer underflow - CVE-2026-7735
osrg GoBGP AIGP Attribute bgp.go PathAttributeAigp.DecodeFro
Same weakness: CWE-476
- CVE-2026-8252
Open5GS SMF smf_nsmf_handle_create_data_in_hsmf null pointer - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7262
NULL pointer dereference in SOAP apache:Map decoder with mis - CVE-2026-42183
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference - CVE-2026-6666
PgBouncer crash in kill_pool_logins_server_error
V. Comments for CVE-2026-41642
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