CVE-2020-6845: An issue was discovered in TopManage OLK 2020

This month

MEDIUM 6.1DOWNGRADE

CVE-2020-6845 is a medium-severity flaw (CVSS 6.1) affecting olk webstore. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in TopManage OLK 2020. As there is no ReadOnly on the Session cookie, the user and admin accounts can be taken over in a DOM-Based XSS attack.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: topmanage

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

Am I affected?

Timeline

2020-02-18 15:15 UTCPublished CVE record published
2026-06-17 03:23 UTCUpdated Record last modified

topmanage olk webstore DOWNGRADE

Affected: 2020

Fixed in: no fixed release known

Safe to downgrade to: a release before 2020

1. Check installed version

apt-cache policy olk-webstore || rpm -q olk-webstore || olk-webstore --version

2. No fixed release: DOWNGRADE to a release before 2020 (Debian / Ubuntu)

apt-cache madison olk-webstore sudo apt install olk-webstore=<VERSION_BEFORE_2020> sudo apt-mark hold olk-webstore

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

dnf --showduplicates list olk-webstore sudo dnf downgrade olk-webstore-<VERSION_BEFORE_2020> sudo dnf versionlock add olk-webstore

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-2020-6845?

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

Is CVE-2020-6845 being exploited?

CVE-2020-6845 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-2020-6845 affect?

CVE-2020-6845 affects olk webstore. Severity is medium (CVSS 6.1). An issue was discovered in TopManage OLK 2020. As there is no ReadOnly on the Session cookie, the user and admin accounts can be taken over in a DOM-Based XSS attack.

How urgent is CVE-2020-6845?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2020-6844 HIGH 8.8 DOWNGRADE In TopManage OLK 2020, login CSRF can be chained with another vulnerability in order to takeover admin and use

References

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