CVE-2026-124465— Trendyol kafka-konsumer 2.3.3 before 2.6.18 Denial of Service via Batch Consumer Panic

Quick assessment

Affected

Trendyol kafka-konsumer

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.

Trendyol kafka-konsumer 在 2.3.3 至 2.6.18（不含）版本中存在拒绝服务漏洞。该漏洞位于 batch_consumer.go 文件中：当单条记录超过 MessageGroupByteSizeLimit 限制时，程序会触发 panic。能够向被消费主题发布消息的攻击者可发送一条超大的记录，导致消费者在提交偏移量（offset commit）之前终止，进而引发持续的崩溃循环。

CVSS 6.5 · Medium Updated Nov 08, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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Vulnerability Information

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Vulnerability Title

Trendyol kafka-konsumer 2.3.3 before 2.6.18 Denial of Service via Batch Consumer Panic

Source: CVE Program / CVE List V5

Vulnerability Description

Trendyol kafka-konsumer from 2.3.3 before 2.6.18 contains a denial of service vulnerability in batch_consumer.go that panics when a single record exceeds MessageGroupByteSizeLimit. Attackers able to produce to the consumed topic can publish one oversized record that terminates the consumer before offset commit, causing a persistent crash loop.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

可达断言

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Trendyol	kafka-konsumer	2.3.3 ~ 2.6.18	-

II. Public POCs for CVE-2026-124465

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-124465

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Other References for CVE-2026-124465 (5)

https://github.com/Trendyol/kafka-konsumer/commit/a290c08b81c70c2d5d4e1f40e4997eae34306078 patch
https://github.com/Trendyol/kafka-konsumer/blob/v2.6.17/batch_consumer.go#L204-L264 technical-description
https://github.com/Trendyol/kafka-konsumer/releases/tag/v2.6.18 release-notes
https://github.com/Trendyol/kafka-konsumer/security/advisories/GHSA-jjgw-p88q-qrxr vendor-advisory
https://www.vulncheck.com/advisories/trendyol-kafka-konsumer-2.3.3-before-2.6.18-denial-of-service-via-batch-consumer-panic third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-124465

IV. Related Vulnerabilities

Same weakness: CWE-617