CVE-2026-8193Public exploitNetwork attack vector

Authenticated SSRF via unsanitized invoice notes

Published May 9, 2026 · Updated May 9, 2026

Server-side request forgery in Akaunting 3.1.21 allows remote authenticated users to make the server request attacker-chosen URLs. Invoice notes accept unsanitized HTML, and the PDF renderer passes it to Dompdf while config/dompdf.php enables remote HTTP and HTTPS resources. Low-privilege access and invoice PDF rendering are required; embedded resource URLs can reach services available from the server.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Akaunting 3.1.21 allows remote authenticated users to make the server request attacker-chosen URLs. Invoice notes accept unsanitized HTML, and the PDF renderer passes it to Dompdf while config/dompdf.php enables remote HTTP and HTTPS resources. Low-privilege access and invoice PDF rendering are required; embedded resource URLs can reach services available from the server.

The record

CVE
CVE-2026-8193
Published
May 9, 2026
Updated
May 9, 2026
Vendor
Akaunting
Product
Akaunting
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2026CVE publishedPublication date reported by the CVE source.
  2. May 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Akaunting · Akauntingversion=3.1.21

Published CVSS scores

2.1INCIBE-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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