CVE-2020-23043: Tran Tu Air Sender v1.0.2 was discovered to contain an arbitrary file upload vulnerability in the upload modul

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HIGH 8.8DOWNGRADE

CVE-2020-23043 is a high-severity flaw (CVSS 8.8) affecting air sender. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tran Tu Air Sender v1.0.2 was discovered to contain an arbitrary file upload vulnerability in the upload module. This vulnerability allows attackers to execute arbitrary code via a crafted file.

Why this priority

High severity
Public exploit reference

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	Low
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-434
Published	2021-10-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: air sender project

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

Am I affected?

Timeline

2021-10-22 20:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

air sender project air sender DOWNGRADE

Affected: 1.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.2

1. Check installed version

apt-cache policy air-sender || rpm -q air-sender || air-sender --version

2. No fixed release: DOWNGRADE to a release before 1.0.2 (Debian / Ubuntu)

apt-cache madison air-sender sudo apt install air-sender=<VERSION_BEFORE_1.0.2> sudo apt-mark hold air-sender

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

dnf --showduplicates list air-sender sudo dnf downgrade air-sender-<VERSION_BEFORE_1.0.2> sudo dnf versionlock add air-sender

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-2020-23043?

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

Is CVE-2020-23043 being exploited?

CVE-2020-23043 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-2020-23043 affect?

CVE-2020-23043 affects air sender. Severity is high (CVSS 8.8). Tran Tu Air Sender v1.0.2 was discovered to contain an arbitrary file upload vulnerability in the upload module. This vulnerability allows attackers to execute arbitrary code via a crafted file.

How urgent is CVE-2020-23043?

Priority 55/100. High severity; Public exploit reference

References

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