CVE-2025-43703Network attack vector

Local data access via spoofable API context

Published Apr 16, 2025 · Updated Apr 17, 2025

Improper web content handling in Ankitects Anki 25.02 and earlier allows remote attackers to access its internal API via a crafted shared deck. The desktop webview trusts spoofable Referer-based page context and permits deck scripts or image requests to reach local API endpoints without an authentication token. A user must import and render the malicious deck; successful access exposes arbitrary local data to the deck's untrusted web content.

CVSS severity6.1
Medium
EPSS probability0.23%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper web content handling in Ankitects Anki 25.02 and earlier allows remote attackers to access its internal API via a crafted shared deck. The desktop webview trusts spoofable Referer-based page context and permits deck scripts or image requests to reach local API endpoints without an authentication token. A user must import and render the malicious deck; successful access exposes arbitrary local data to the deck's untrusted web content.

The record

CVE
CVE-2025-43703
Published
Apr 16, 2025
Updated
Apr 17, 2025
Vendor
Ankitects Pty Ltd
Product
Anki
Classifications
CWE-830, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record 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=0 <=25.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ankitects Pty Ltd · Ankiversion=0 <=25.02

Published CVSS scores

6.1MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-830Inclusion of Web Functionality from an Untrusted Source
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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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