CVE-2026-118597— Akaunting 3.3.0 - Stored XSS in custom invoice payment terms

Quick assessment

Affected

Akaunting Akaunting

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.

Akaunting 3.3.0 在自定义发票付款条款中存在存储型跨站脚本（Stored XSS）漏洞。已认证的“经理”（Manager）角色可以保存经过篡改的自定义付款条款值。当授权用户打开同一公司的“发票设置”时，Akaunting 会将该存储的值插入到客户端事件处理程序表达式中，导致攻击者控制的 JavaScript 在受害者的已认证上下文中执行。

CVSS 7.2 · High Updated Nov 12, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Akaunting 3.3.0 - Stored XSS in custom invoice payment terms

Source: CVE Program / CVE List V5

Vulnerability Description

Akaunting 3.3.0 contains a stored cross-site scripting vulnerability in custom invoice payment terms. An authenticated Manager can save a crafted custom payment-term value. When an authorized user opens Invoice Settings for the same company, Akaunting inserts the stored value into a client-side event-handler expression, causing attacker-controlled JavaScript to execute in the victim's authenticated origin.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA: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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Akaunting	Akaunting	3.3.0	-

II. Public POCs for CVE-2026-118597

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III. Intelligence Information for CVE-2026-118597

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Other References for CVE-2026-118597 (4)

https://github.com/akaunting/akaunting/blob/3.3.0/app/View/Components/Form/Group/PaymentTerm.php technical-description
https://fluidattacks.com/advisories/rhiannon third-party-advisory
https://github.com/akaunting/akaunting/blob/3.3.0/app/Abstracts/Http/SettingController.php technical-description
https://github.com/akaunting/akaunting/blob/3.3.0/resources/views/components/form/group/payment_term.blade.php technical-description

https://www.cve.org/CVERecord?id=CVE-2026-118597

IV. Related Vulnerabilities

Same product: Akaunting

Same vendor: Akaunting

Same weakness: CWE-79