CVE-2018-1000070: Bitmessage PyBitmessage version v0.6.2 (and introduced in or after commit 8ce72d8d2d25973b7064b1cf76a6b0b3d62f

This month

HIGH 8.8DOWNGRADE

CVE-2018-1000070 is a high-severity flaw (CVSS 8.8) affecting pybitmessage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bitmessage PyBitmessage version v0.6.2 (and introduced in or after commit 8ce72d8d2d25973b7064b1cf76a6b0b3d62f0ba0) contains a Eval injection vulnerability in main program, file src/messagetypes/__init__.py function constructObject that can result in Code Execution. This attack appears to be exploitable via remote attacker using a malformed message which must be processed by the victim - e.g. arrive from any sender on bitmessage network. This vul

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-94
Published	2018-03-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bitmessage

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-03-13 15:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

bitmessage pybitmessage DOWNGRADE

Affected: 0.6.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6.2

1. Check installed version

apt-cache policy pybitmessage || rpm -q pybitmessage || pybitmessage --version

2. No fixed release: DOWNGRADE to a release before 0.6.2 (Debian / Ubuntu)

apt-cache madison pybitmessage sudo apt install pybitmessage=<VERSION_BEFORE_0.6.2> sudo apt-mark hold pybitmessage

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pybitmessage sudo dnf downgrade pybitmessage-<VERSION_BEFORE_0.6.2> sudo dnf versionlock add pybitmessage

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-1000070?

pybitmessage: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-1000070 being exploited?

CVE-2018-1000070 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-1000070 affect?

CVE-2018-1000070 affects pybitmessage. Severity is high (CVSS 8.8). Bitmessage PyBitmessage version v0.6.2 (and introduced in or after commit 8ce72d8d2d25973b7064b1cf76a6b0b3d62f0ba0) contains a Eval injection vulnerability in main program, file src/messagetypes/__init__.py function constructObject that can

How urgent is CVE-2018-1000070?

Priority 52/100. High severity

Related CVEs

CVE-2021-26917 MEDIUM 5.5 UPGRADE PyBitmessage through 0.6.3.2 allows attackers to write screen captures to Potentially Unwanted Directories via

References

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