CVE-2022-37774Network attack vector

Document disclosure via unauthenticated hashed preview URLs

Published Nov 22, 2022 · Updated Jul 9, 2026

Broken access control in Maarch RM 2.8.3 allows remote attackers to read archived PDF and email documents through preview URLs. The preview function places documents under /tmp/ at URLs keyed only by an MD5 hash and serves those URLs without checking authentication or archive authorization. An attacker must learn a generated URL, such as from browser history or logs; possession of that URL exposes the referenced previewable document but does not permit modification.

CVSS severity5.3
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in Maarch RM 2.8.3 allows remote attackers to read archived PDF and email documents through preview URLs. The preview function places documents under /tmp/ at URLs keyed only by an MD5 hash and serves those URLs without checking authentication or archive authorization. An attacker must learn a generated URL, such as from browser history or logs; possession of that URL exposes the referenced previewable document but does not permit modification.

The record

CVE
CVE-2022-37774
Published
Nov 22, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1213Data from Information Repositories

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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