CVE-2021-44839: An issue was discovered in Delta RM 1.2

Routine

MEDIUM 6.5DOWNGRADE

CVE-2021-44839 is a medium-severity flaw (CVSS 6.5) affecting delta rm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Delta RM 1.2. It is possible to request a new password for any other account using the account ID. Using the /listes/DTsendmaildata/adm_utilisateur/send-mail.json endpoint, a user can send a JSON array with user IDs that will have their passwords reset (and new ones sent to their respective e-mail addresses).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-640
Published	2022-01-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: deltarm

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

Am I affected?

Timeline

2022-01-18 20:15 UTCPublished CVE record published
2026-06-17 04:12 UTCUpdated Record last modified

deltarm delta rm DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

apt-cache policy delta-rm || rpm -q delta-rm || delta-rm --version

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison delta-rm sudo apt install delta-rm=<VERSION_BEFORE_1.2> sudo apt-mark hold delta-rm

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

dnf --showduplicates list delta-rm sudo dnf downgrade delta-rm-<VERSION_BEFORE_1.2> sudo dnf versionlock add delta-rm

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-2021-44839?

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

Is CVE-2021-44839 being exploited?

CVE-2021-44839 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-2021-44839 affect?

CVE-2021-44839 affects delta rm. Severity is medium (CVSS 6.5). An issue was discovered in Delta RM 1.2. It is possible to request a new password for any other account using the account ID. Using the /listes/DTsendmaildata/adm_utilisateur/send-mail.json endpoint, a user can send a JSON array with user I

How urgent is CVE-2021-44839?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2021-44840 LOW 2.7 DOWNGRADE An issue was discovered in Delta RM 1.2
CVE-2021-44838 MEDIUM 4.3 DOWNGRADE An issue was discovered in Delta RM 1.2
CVE-2021-44837 MEDIUM 4.3 DOWNGRADE An issue was discovered in Delta RM 1.2
CVE-2021-44836 MEDIUM 4.3 DOWNGRADE An issue was discovered in Delta RM 1.2

References

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