CVE-2024-49753Public exploitNetwork attack vector

Internal endpoint access via DNS-rebinding host bypass

Published Oct 25, 2024 · Updated Oct 25, 2024

SSRF in ZITADEL Actions allows remote authenticated users to access unsecured internal endpoints through attacker-controlled DNS. The isHostBlocked check rejects a literal loopback address but accepts a custom hostname whose DNS answer is 127.0.0.1. Creating and executing the Action requires high privileges; successful exploitation can read data from or invoke unsecured loopback services.

CVSS severity5.9
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in ZITADEL Actions allows remote authenticated users to access unsecured internal endpoints through attacker-controlled DNS. The isHostBlocked check rejects a literal loopback address but accepts a custom hostname whose DNS answer is 127.0.0.1. Creating and executing the Action requires high privileges; successful exploitation can read data from or invoke unsecured loopback services.

The record

CVE
CVE-2024-49753
Published
Oct 25, 2024
Updated
Oct 25, 2024
Vendor
ZITADEL
Product
ZITADEL
Classifications
CWE-20, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record 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 <2.58.7
  2. Affected versionversion=< 2.58.7
  3. Affected versionversion=>= 2.59, < 2.59.5
  4. Affected versionversion=2.59 <2.59.5
  5. Affected versionversion=>= 2.60, < 2.60.4
  6. Affected versionversion=2.60 <2.60.4
  7. Affected versionversion=>= 2.61, < 2.61.4
  8. Affected versionversion=2.61 <2.61.4
  9. Affected versionversion=>= 2.62, < 2.62.8
  10. Affected versionversion=2.62 <2.62.8
  11. Affected versionversion=>= 2.63, < 2.63.6
  12. Affected versionversion=2.63 <2.63.6
  13. Affected versionversion=>= 2.64, < 2.64.1
  14. Affected versionversion=2.64 <2.64.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ZITADEL · ZITADELversion=0 <2.58.7; version=< 2.58.7; version=>= 2.59, < 2.59.5; version=2.59 <2.59.5; version=>= 2.60, < 2.60.4; version=2.60 <2.60.4; version=>= 2.61, < 2.61.4; version=2.61 <2.61.4; version=>= 2.62, < 2.62.8; version=2.62 <2.62.8; version=>= 2.63, < 2.63.6; version=2.63 <2.63.6; version=>= 2.64, < 2.64.1; version=2.64 <2.64.1

Published CVSS scores

5.9GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
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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