Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-7734— osrg GoBGP SRv6 L3 Service prefix_sid.go SRv6L3ServiceAttribute.DecodeFromBytes denial of service

Quick assessment

Affected
osrg GoBGP
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.

GoBGP是osrg开源的一种开源的边界网关协议（BGP）实现。 GoBGP 4.3.0及之前版本存在安全漏洞，该漏洞源于组件SRv6 L3 Service中文件pkg/packet/bgp/prefix_sid.go的函数SRv6L3ServiceAttribute.DecodeFromBytes对参数data操作导致拒绝服务，攻击者可远程执行攻击。

CVSS 5.3 · Medium EPSS 0.85% · P57

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
osrg GoBGP 4.0 affected
4.1 affected
4.2 affected
4.3.0 affected
4.4.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-7734

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
osrg GoBGP SRv6 L3 Service prefix_sid.go SRv6L3ServiceAttribute.DecodeFromBytes denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in osrg GoBGP up to 4.3.0. This impacts the function SRv6L3ServiceAttribute.DecodeFromBytes of the file pkg/packet/bgp/prefix_sid.go of the component SRv6 L3 Service. Such manipulation of the argument data leads to denial of service. The attack may be performed from remote. Upgrading to version 4.4.0 will fix this issue. The name of the patch is f9f7b55ec258e514be0264871fa645a2c3edad11. You should upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5
Vulnerability Title
GoBGP 安全漏洞
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及之前版本存在安全漏洞，该漏洞源于组件SRv6 L3 Service中文件pkg/packet/bgp/prefix_sid.go的函数SRv6L3ServiceAttribute.DecodeFromBytes对参数data操作导致拒绝服务，攻击者可远程执行攻击。
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
osrg GoBGP 4.0 cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7734

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-7734

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-7734 (1)

Vendor Pages for CVE-2026-7734 (1)

Same Patch Batch · osrg · 2026-05-04 · 4 CVEs total

CVE-2026-7735 7.3 HIGH osrg GoBGP AIGP Attribute bgp.go PathAttributeAigp.DecodeFromBytes buffer overflow
CVE-2026-7736 7.3 HIGH osrg GoBGP mrt.go parseRibEntry integer underflow
CVE-2026-7737 5.3 MEDIUM osrg GoBGP BMP Parser bmp.go BMPStatisticsReport.ParseBody out-of-bounds

IV. Related Vulnerabilities

Same product: GoBGP
Same vendor: osrg
Same weakness: CWE-404

V. Comments for CVE-2026-7734

No comments yet

Leave a comment