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CVE-2026-34848— hoppscotch: Stored XSS in team member overflow tooltip via display name

Quick assessment

Affected
hoppscotch hoppscotch
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.

Hoppscotch是Hoppscotch开源的一个Api开发生态系统。 Hoppscotch 2026.3.0之前版本存在跨站脚本漏洞，该漏洞源于团队成员溢出工具提示中的显示名称存在存储型跨站脚本。

CVSS 5.4 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-34848

Vulnerability Information
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Vulnerability Title
hoppscotch: Stored XSS in team member overflow tooltip via display name
Source: CVE Program / CVE List V5
Vulnerability Description
hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is a stored XSS vulnerability in the team member overflow tooltip via display name. This issue has been patched in version 2026.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Hoppscotch 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hoppscotch是Hoppscotch开源的一个Api开发生态系统。 Hoppscotch 2026.3.0之前版本存在跨站脚本漏洞，该漏洞源于团队成员溢出工具提示中的显示名称存在存储型跨站脚本。
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
hoppscotch hoppscotch < 2026.3.0 -

II. Public POCs for CVE-2026-34848

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III. Intelligence Information for CVE-2026-34848

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Vendor Advisories for CVE-2026-34848 (1)

Vendor Pages for CVE-2026-34848 (1)

Same Patch Batch · hoppscotch · 2026-04-02 · 4 CVEs total

CVE-2026-34847 4.7 MEDIUM hoppscotch: Open redirect via `/enter?redirect=`
CVE-2026-34931 hoppscotch: Improper loopback redirect_uri validation in device-login flow
CVE-2026-34932 hoppscotch: Stored XSS via mock server responses on backend origin

IV. Related Vulnerabilities

Same product: hoppscotch
Same vendor: hoppscotch
Same weakness: CWE-79

V. Comments for CVE-2026-34848

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