CVE-2023-32694Network attack vector

Payment-event forgery via non-constant HMAC comparison

Published May 25, 2023 · Updated Jan 16, 2025

Timing attack in Saleor Core's Adyen plugin allows remote attackers to recover its HMAC secret through webhook requests. The validate_hmac_signature function uses a non-constant-time comparison that leaks signature-match timing information. The Adyen plugin must be enabled; the recovered secret permits forged webhook events that can mark unpaid orders as paid.

CVSS severity4.8
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Timing attack in Saleor Core's Adyen plugin allows remote attackers to recover its HMAC secret through webhook requests. The validate_hmac_signature function uses a non-constant-time comparison that leaks signature-match timing information. The Adyen plugin must be enabled; the recovered secret permits forged webhook events that can mark unpaid orders as paid.

The record

CVE
CVE-2023-32694
Published
May 25, 2023
Updated
Jan 16, 2025
Vendor
Saleor
Product
Saleor
Classifications
CWE-203, CWE-208, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 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=>= 2.11.0, < 3.7.68
  2. Affected versionversion=>= 3.10.0, < 3.10.36
  3. Affected versionversion=>= 3.11.0, < 3.11.35
  4. Affected versionversion=>= 3.12.0, < 3.12.25
  5. Affected versionversion=>= 3.13.0, < 3.13.16
  6. Affected versionversion=>= 3.8.0, < 3.8.40
  7. Affected versionversion=>= 3.9.0, < 3.9.49

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Saleor · Saleorversion=>= 2.11.0, < 3.7.68; version=>= 3.10.0, < 3.10.36; version=>= 3.11.0, < 3.11.35; version=>= 3.12.0, < 3.12.25; version=>= 3.13.0, < 3.13.16; version=>= 3.8.0, < 3.8.40; version=>= 3.9.0, < 3.9.49

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
4.8GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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-203Observable Discrepancy
CWE-208Observable Timing Discrepancy
T1565.002Transmitted Data Manipulation

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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