CVE-2026-32322Network attack vector

Contract validation bypass via unreduced scalar comparison

Published Mar 12, 2026 · Updated Mar 12, 2026

Incorrect comparison in soroban-sdk allows remote attackers to bypass contract validation by supplying crafted Fr scalar values. The Fr constructors accept arbitrary U256 values without reducing them modulo r, while PartialEq compares raw representations, causing equal field elements to compare unequal. Exploitation requires a contract to compare attacker-supplied Fr values directly before host arithmetic canonicalizes them; security-critical comparisons can make incorrect authorization or validation decisions.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect comparison in soroban-sdk allows remote attackers to bypass contract validation by supplying crafted Fr scalar values. The Fr constructors accept arbitrary U256 values without reducing them modulo r, while PartialEq compares raw representations, causing equal field elements to compare unequal. Exploitation requires a contract to compare attacker-supplied Fr values directly before host arithmetic canonicalizes them; security-critical comparisons can make incorrect authorization or validation decisions.

The record

CVE
CVE-2026-32322
Published
Mar 12, 2026
Updated
Mar 12, 2026
Vendor
Stellar Development Foundation
Product
soroban-sdk
Classifications
CWE-697, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 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=< 22.0.11
  2. Affected versionversion=>= 23.0.0, < 23.5.3
  3. Affected versionversion=>= 25.0.0, < 25.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Stellar Development Foundation · soroban-sdkversion=< 22.0.11; version=>= 23.0.0, < 23.5.3; version=>= 25.0.0, < 25.3.0

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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-697Incorrect Comparison
T1190Exploit Public-Facing Application

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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