CVE-2020-15016: NeDi 1.9C is vulnerable to reflected cross-site scripting

Routine

MEDIUM 6.1DOWNGRADE

CVE-2020-15016 is a medium-severity flaw (CVSS 6.1) affecting nedi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NeDi 1.9C is vulnerable to reflected cross-site scripting. The Other-Converter.php file improperly validates user input. An attacker can exploit this vulnerability by crafting arbitrary JavaScript in the txt GET parameter.

Why this priority

No elevated risk signals yet

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	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-06-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nedi

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

Am I affected?

Timeline

2020-06-26 14:15 UTCPublished CVE record published
2026-06-17 02:55 UTCUpdated Record last modified

nedi nedi DOWNGRADE

Affected: 1.9c

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9c

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.9c (Debian / Ubuntu)

apt-cache madison nedi sudo apt install nedi=<VERSION_BEFORE_1.9c> sudo apt-mark hold nedi

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

dnf --showduplicates list nedi sudo dnf downgrade nedi-<VERSION_BEFORE_1.9c> sudo dnf versionlock add nedi

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-2020-15016?

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

Is CVE-2020-15016 being exploited?

CVE-2020-15016 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-2020-15016 affect?

CVE-2020-15016 affects nedi. Severity is medium (CVSS 6.1). NeDi 1.9C is vulnerable to reflected cross-site scripting. The Other-Converter.php file improperly validates user input. An attacker can exploit this vulnerability by crafting arbitrary JavaScript in the txt GET parameter.

How urgent is CVE-2020-15016?

Priority 34/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

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References

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