CVE-2026-41643— GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE
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I. Basic Information for CVE-2026-41643
Vulnerability Information
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Vulnerability Title
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE
Source: NVD (National Vulnerability Database)
Vulnerability Description
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0.
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
对数组索引的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
GoBGP 输入验证错误漏洞
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之前版本存在输入验证错误漏洞，该漏洞源于处理4字节AS属性时内部切片索引移位处理不当，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-2026-41643
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 10815 chars
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III. Intelligence Information for CVE-2026-41643
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Same Patch Batch · osrg · 2026-05-07 · 3 CVEs total
| CVE-2026-41642 | 7.5 HIGH | GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute |
| 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-2026-42285
GoBGP: Panic in AdjRib.Update via malformed BGP Update messa - CVE-2026-41642
GoBGP: Remote Denial of Service (Panic) via Malformed Well-k - 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-2026-42285
GoBGP: Panic in AdjRib.Update via malformed BGP Update messa - CVE-2026-41642
GoBGP: Remote Denial of Service (Panic) via Malformed Well-k - 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-129
- CVE-2026-40251
Incus out-of-bounds panic in snapshot metadata handling allo - CVE-2026-40886
Argo Workflows: Unchecked annotation parsing in pod informer - CVE-2026-6840
ONE 输入验证错误漏洞 - CVE-2026-40097
Step CA affected by an index out of bounds panic in TPM atte - CVE-2026-34942
Wasmtime panics when transcoding misaligned utf-16 strings
V. Comments for CVE-2026-41643
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