| Title | halo-dev Halo 2.15.0 through 2.25.4 Improper Neutralization of Special Elements used in an Expressio |
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| Description | **Expression Language Injection via Guest Reply Subscription:**
- When guest comments are enabled, Halo creates a reply-notification subscription for an anonymous visitor.
- The visitor identity, which contains the submitted email address, is inserted directly into a Spring Expression Language (SpEL) expression.
- Single quotes in the identity are not escaped before the expression is stored and later evaluated. |
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| Source | ⚠️ https://note-hxlab.wetolink.com/share/jTI97vuXfcCY |
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| User | hiro (UID 93548) |
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| Submission | 07/28/2026 09:33 (2 months ago) |
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| Moderation | 09/24/2026 08:58 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 409299 [halo-dev Halo up to 2.25.4/2.26.1 SpEL ReplyNotificationSubscriptionHelper.java neutralization] |
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| Points | 19 |
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