CVE WatchOct 15, 2026

CVE-2026-55840

Scoold is a Q&A and a knowledge sharing platform for teams. Prior to 1.69.1, the getBackToUrl() method in src/main/java/com/erudika/scoold/u

CVSS

5.4

Medium

EPSS

0.3%

p17

KEV

—

Exploit Today

0-100

Published: Oct 15, 2026 · Last modified: Oct 15, 2026 · CWE-601

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-10-162026-10-20

Technical description

Scoold is a Q&A and a knowledge sharing platform for teams. Prior to 1.69.1, the getBackToUrl() method in src/main/java/com/erudika/scoold/utils/HttpUtils.java validates the backto and returnto parameters with Strings.CI.startsWith against the configured server URL. An attacker can supply an absolute URL whose hostname begins with the legitimate hostname, causing URI.resolve() to retain the attacker URL and the prefix check to accept it. A victim who follows the crafted sign-in link can be redirected to an attacker-controlled domain after authentication, enabling phishing and possible credential or token theft. This issue is fixed in version 1.69.1.

Official references

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