CVE-2021-35196Public exploit

Code execution via untrusted pickle deserialization

Published Jun 21, 2021 · Updated Aug 4, 2024

Code execution in Manuskript 0.12.0 and earlier allows attackers to run arbitrary code by opening a crafted project file. When the project loader reads embedded settings.pickle data, settings.py passes attacker-controlled bytes to pickle.load(), which reconstructs executable Python objects without validation. A user must open an untrusted project; the maintainer disputes the issue because the product is not intended to open untrusted projects.

CVSS severity7.8
High
EPSS probability1.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Manuskript 0.12.0 and earlier allows attackers to run arbitrary code by opening a crafted project file. When the project loader reads embedded settings.pickle data, settings.py passes attacker-controlled bytes to pickle.load(), which reconstructs executable Python objects without validation. A user must open an untrusted project; the maintainer disputes the issue because the product is not intended to open untrusted projects.

The record

CVE
CVE-2021-35196
Published
Jun 21, 2021
Updated
Aug 4, 2024
Vendor
Theologeek
Product
Manuskript
Classifications
CWE-502, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.12.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Theologeek · Manuskriptversion=0 <=0.12.0

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1204.002User Execution: Malicious File

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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