CVE-2021-27704: Appspace 6.2.4 is affected by Incorrect Access Control via the Appspace Web Portal password reset page.

Routine

MEDIUM 6.5DOWNGRADE

CVE-2021-27704 is a medium-severity flaw (CVSS 6.5) affecting appspace. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Appspace 6.2.4 is affected by Incorrect Access Control via the Appspace Web Portal password reset page.

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	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-352
Published	2024-11-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: appspace

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

Am I affected?

Timeline

2024-11-12 23:15 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

appspace appspace DOWNGRADE

Affected: 6.2.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.2.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.2.4 (Debian / Ubuntu)

apt-cache madison appspace sudo apt install appspace=<VERSION_BEFORE_6.2.4> sudo apt-mark hold appspace

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

dnf --showduplicates list appspace sudo dnf downgrade appspace-<VERSION_BEFORE_6.2.4> sudo dnf versionlock add appspace

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-2021-27704?

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

Is CVE-2021-27704 being exploited?

CVE-2021-27704 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-2021-27704 affect?

CVE-2021-27704 affects appspace. Severity is medium (CVSS 6.5). Appspace 6.2.4 is affected by Incorrect Access Control via the Appspace Web Portal password reset page.

How urgent is CVE-2021-27704?

Priority 32/100. No elevated risk signals yet.

References

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