CVE-2024-23330Public exploitNetwork attack vector

Recipient tracking via unsanitized inline SVG images

Published Jan 23, 2024 · Updated May 30, 2025

Information disclosure in Tuta Mail before 119.10 allows remote attackers to learn recipient activity and IP addresses via crafted HTML mail. The mail renderer permits an inline SVG image with an external HTTP xlink:href and follows redirects despite disabled automatic image loading. The recipient must open the message; the resulting request reveals an active address, read time, device details, and the recipient's IP address.

CVSS severity5.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Tuta Mail before 119.10 allows remote attackers to learn recipient activity and IP addresses via crafted HTML mail. The mail renderer permits an inline SVG image with an external HTTP xlink:href and follows redirects despite disabled automatic image loading. The recipient must open the message; the resulting request reveals an active address, read time, device details, and the recipient's IP address.

The record

CVE
CVE-2024-23330
Published
Jan 23, 2024
Updated
May 30, 2025
Vendor
Tutao GmbH
Product
Tuta Mail
Classifications
CWE-918, T1566.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  2. May 30, 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=< 119.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tutao GmbH · Tuta Mailversion=< 119.10

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1566.001Spearphishing Attachment

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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