CVE-2024-37311Network attack vector

HTTPS interception via incomplete certificate-chain validation

Published Aug 23, 2024 · Updated Aug 23, 2024

Improper certificate validation in Collabora Online's coolwsd allows remote attackers to intercept its outbound HTTPS traffic. StorageBase::initialize in wsd/Storage.cpp configures outbound HTTPS handling without validating the remote certificate through the full chain to a trusted root. An attacker positioned between coolwsd and another HTTPS host can impersonate that host, read transferred content, and alter responses.

CVSS severity8.2
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Collabora Online's coolwsd allows remote attackers to intercept its outbound HTTPS traffic. StorageBase::initialize in wsd/Storage.cpp configures outbound HTTPS handling without validating the remote certificate through the full chain to a trusted root. An attacker positioned between coolwsd and another HTTPS host can impersonate that host, read transferred content, and alter responses.

The record

CVE
CVE-2024-37311
Published
Aug 23, 2024
Updated
Aug 23, 2024
Vendor
Collabora Productivity
Product
Collabora Online
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 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=< 22.05.23.1
  2. Affected versionversion=>= 23.05.0-1, < 23.05.14-1
  3. Affected versionversion=>= 24.04.1.1, < 24.04.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Collabora Productivity · Collabora Onlineversion=< 22.05.23.1; version=>= 23.05.0-1, < 23.05.14-1; version=>= 24.04.1.1, < 24.04.4.3

Published CVSS scores

8.2GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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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