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CVE-2021-29933: An issue was discovered in the insert_many crate through 2021-01-26 for Rust

53
This week
HIGH 7.5REMOTEUPGRADE

CVE-2021-29933 is a high-severity flaw (CVSS 7.5) affecting insert many. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the insert_many crate through 2021-01-26 for Rust. Elements may be dropped twice if a .next() method panics.

Why this priority

  • High severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.2% (top 32%)
CISA exploited listNo
WeaknessCWE-415
Published2021-04-01
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: insert many project

Share: LinkedIn · X · Reddit

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

Am I affected?

Timeline

insert many project insert many UPGRADE
Affected: <= 2021-01-26
Fixed in: newer than 2021-01-26
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy insert-many || rpm -q insert-many || insert-many --version
2. UPGRADE to newer than 2021-01-26 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade insert-many
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade insert-many
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2021-29933?

insert many: upgrade to newer than 2021-01-26. Exact commands for each OS are on this page.

Is CVE-2021-29933 being exploited?

CVE-2021-29933 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-2021-29933 affect?

CVE-2021-29933 affects insert many. Severity is high (CVSS 7.5). An issue was discovered in the insert_many crate through 2021-01-26 for Rust. Elements may be dropped twice if a .next() method panics.

How urgent is CVE-2021-29933?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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