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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-115479— baserCMS: Mail-form auto-replies accept multiple visitor-controlled recipients

Quick assessment

Affected
baserproject basercms
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.

baserCMS 是一个网站开发框架。在 5.2.5 至 5.3.2（不含 5.3.2）以及 5.4.0 至 5.4.2（不含 5.4.2）的版本中，未认证访客可在公开邮件表单的电子邮件字段中提供逗号分隔的地址列表，从而导致系统向多个第三方发送同一封自动回复邮件。具体而言，MailMessageMailer::sendFormToUser() 方法将访客控制的 userMail 值传递给 parseAndNormalizeMailAddresses()，该方法使用 explode(',') 对其进行拆分，并将拆分后

CVSS 5.3 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
baserproject basercms >= 5.2.5, < 5.3.2 affected
>= 5.4.0, < 5.4.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-115479

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
baserCMS: Mail-form auto-replies accept multiple visitor-controlled recipients
Source: CVE Program / CVE List V5
Vulnerability Description
baserCMS is a website development framework. In versions 5.2.5 before 5.3.2 and 5.4.0 before 5.4.2, an unauthenticated visitor can supply a comma-separated address list in a public mail form's email field and cause a single auto-reply to be addressed to multiple third parties. MailMessageMailer::sendFormToUser() passes the visitor-controlled userMail value to parseAndNormalizeMailAddresses(), which splits it with explode(',') and supplies every resulting address to setTo(). Newly created forms with an email-type field are affected when the separate, optional VALID_EMAIL server-side validation is not enabled; browser type=email validation does not prevent crafted requests. The bundled contact form enables VALID_EMAIL and is not affected. The auto-reply uses the site's sender identity and includes partially attacker-controlled content, allowing abuse of the site to deliver unsolicited mail. This issue has been patched in versions 5.3.2 and 5.4.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
baserproject basercms >= 5.2.5, < 5.3.2 -

II. Public POCs for CVE-2026-115479

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-115479

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-115479 (1)

Vendor Advisories for CVE-2026-115479 (1)

Vendor Pages for CVE-2026-115479 (1)

Same Patch Batch · baserproject · 2026-10-23 · 8 CVEs total

CVE-2026-114621 8.8 HIGH baserCMS: SQL injection in the admin panel and admin API
CVE-2026-115481 8.5 HIGH baserCMS: BcCustomContent file fields can be configured to allow executable file extension
CVE-2026-114622 7.2 HIGH baserCMS: Encoded path traversal bypass in the theme file API
CVE-2026-114624 7.2 HIGH baserCMS: PHP object injection via unguarded unserialize() in the widget-area entity
CVE-2026-115457 7.1 HIGH baserCMS: Unauthenticated Stored XSS via Shortcode Expansion in Blog Comments
CVE-2026-114623 6.5 MEDIUM baserCMS: Path traversal in the BcThemeFile admin screen allows file disclosure
CVE-2026-115480 5.3 MEDIUM baserCMS: Public Web API mail-form submission bypasses image CAPTCHA

IV. Related Vulnerabilities

Same product: basercms
Same vendor: baserproject
Same weakness: CWE-20

V. Comments for CVE-2026-115479

No comments yet

Leave a comment