CVE-2021-36359Public exploitNetwork attack vector

Authenticated code execution via PDF-export XML injection

Published Aug 30, 2021 · Updated Aug 4, 2024

XML injection in OrbiTeam BSCW Classic before 7.4.3 allows remote authenticated users to execute arbitrary code through PDF export. The folder-description path reached through bscw.cgi op=_editfolder.EditFolder passes unencoded XML tags to ReportLab ParaParser, whose unichar code handler evaluates attacker-controlled Python expressions. A low-privileged account and use of the exportpdf function are required; successful exploitation runs code in the BSCW server process context.

CVSS severity8.8
High
EPSS probability3.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML injection in OrbiTeam BSCW Classic before 7.4.3 allows remote authenticated users to execute arbitrary code through PDF export. The folder-description path reached through bscw.cgi op=_editfolder.EditFolder passes unencoded XML tags to ReportLab ParaParser, whose unichar code handler evaluates attacker-controlled Python expressions. A low-privileged account and use of the exportpdf function are required; successful exploitation runs code in the BSCW server process context.

The record

CVE
CVE-2021-36359
Published
Aug 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-91, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 30, 2021CVE 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

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-91XML Injection (aka Blind XPath Injection)
T1190Exploit Public-Facing Application

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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