CVE-2018-11522: Yosoro 1.0.4 has stored XSS.

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MEDIUM 6.1DOWNGRADE

CVE-2018-11522 is a medium-severity flaw (CVSS 6.1) affecting yosoro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Yosoro 1.0.4 has stored XSS.

Why this priority

EPSS top 9%: very likely to be exploited
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	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-06-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yosoro project

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

Am I affected?

Timeline

2018-06-02 01:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

yosoro project yosoro DOWNGRADE

Affected: 1.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.4 (Debian / Ubuntu)

apt-cache madison yosoro sudo apt install yosoro=<VERSION_BEFORE_1.0.4> sudo apt-mark hold yosoro

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

dnf --showduplicates list yosoro sudo dnf downgrade yosoro-<VERSION_BEFORE_1.0.4> sudo dnf versionlock add yosoro

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Yosoro 1.0.4 - Remote Code Execution

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-2018-11522?

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

Is CVE-2018-11522 being exploited?

CVE-2018-11522 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-2018-11522 affect?

CVE-2018-11522 affects yosoro. Severity is medium (CVSS 6.1). Yosoro 1.0.4 has stored XSS.

How urgent is CVE-2018-11522?

Priority 49/100. EPSS top 9%: very likely to be exploited; Public exploit reference

References

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