CVE-2020-8778Public exploitNetwork attack vector

Stored XSS via unsanitized uploaded document

Published Mar 2, 2020 · Updated Aug 4, 2024

Cross-site scripting in Alfresco Enterprise before 5.2.7 and Community before 6.2.0 allows remote authenticated users to execute script via uploaded documents. The document-upload handling stores attacker-controlled content without adequate neutralization, so rendering the document in a project executes the injected script in a viewer's browser. Project write access is required, and successful exploitation can read or alter data available to the victim's session without affecting service availability.

CVSS severity5.4
Medium
EPSS probability2.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Alfresco Enterprise before 5.2.7 and Community before 6.2.0 allows remote authenticated users to execute script via uploaded documents. The document-upload handling stores attacker-controlled content without adequate neutralization, so rendering the document in a project executes the injected script in a viewer's browser. Project write access is required, and successful exploitation can read or alter data available to the victim's session without affecting service availability.

The record

CVE
CVE-2020-8778
Published
Mar 2, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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