CVE-2026-28479Network attack vector

Sandbox cache poisoning via colliding configuration hashes

Published Mar 5, 2026 · Updated Mar 5, 2026

Cache poisoning in OpenClaw before 2026.2.15 allows remote attackers to reuse unsafe sandbox state through colliding configuration cache keys. The computeHash function serializes normalized Docker and browser sandbox configurations and uses collision-prone SHA-1 output as their deterministic cache identity. Exploitation requires a chosen collision across configuration payloads; matching identities can suppress required sandbox recreation and reuse state intended for another configuration.

CVSS severity8.7
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cache poisoning in OpenClaw before 2026.2.15 allows remote attackers to reuse unsafe sandbox state through colliding configuration cache keys. The computeHash function serializes normalized Docker and browser sandbox configurations and uses collision-prone SHA-1 output as their deterministic cache identity. Exploitation requires a chosen collision across configuration payloads; matching identities can suppress required sandbox recreation and reuse state intended for another configuration.

The record

CVE
CVE-2026-28479
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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=0 <2026.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.2.15

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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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-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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