CVE-2022-26779Public exploitNetwork attack vector

Project access via time-predictable invitation tokens

Published Mar 15, 2022 · Updated Aug 3, 2024

Privilege escalation in Apache CloudStack before 4.16.1.0 allows remote authenticated users to join projects through predicted invite tokens. ProjectManagerImpl.generateToken seeds java.util.Random with System.currentTimeMillis(), making each 10-character email invitation token time-predictable. The non-default invitation feature must be enabled, and exploitation requires a known or guessed project ID before the intended recipient accepts the invite.

CVSS severity7.5
High
EPSS probability2.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Apache CloudStack before 4.16.1.0 allows remote authenticated users to join projects through predicted invite tokens. ProjectManagerImpl.generateToken seeds java.util.Random with System.currentTimeMillis(), making each 10-character email invitation token time-predictable. The non-default invitation feature must be enabled, and exploitation requires a known or guessed project ID before the intended recipient accepts the invite.

The record

CVE
CVE-2022-26779
Published
Mar 15, 2022
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache CloudStack
Classifications
CWE-330, CWE-337, CWE-338, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=Apache CloudStack <4.16.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache CloudStackversion=Apache CloudStack <4.16.1

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
6.7GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
4.6NIST NVDAV:N/AC:H/Au:S/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CWE-337Predictable Seed in Pseudo-Random Number Generator (PRNG)
CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
T1528Steal Application Access Token

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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