CVE-2017-1000048: the web framework using ljharb's qs module older than v6.3.2, v6.2.3, v6.1.2, and v6.0.4 is vulnerable to a Do

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HIGH 7.5REMOTEDOWNGRADE

CVE-2017-1000048 is a high-severity flaw (CVSS 7.5) affecting qs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

the web framework using ljharb's qs module older than v6.3.2, v6.2.3, v6.1.2, and v6.0.4 is vulnerable to a DoS. A malicious user can send a evil request to cause the web framework crash.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-07-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: qs project

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

Am I affected?

Timeline

2017-07-17 13:18 UTCPublished CVE record published
2026-06-17 00:58 UTCUpdated Record last modified

qs project qs DOWNGRADE

Affected: 1.0.0 · 1.0.1 · 1.0.2 · 1.1.0 · 1.2.0 · 1.2.1 · 2.3.1 · 2.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison qs sudo apt install qs=<VERSION_BEFORE_1.0.0> sudo apt-mark hold qs

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

dnf --showduplicates list qs sudo dnf downgrade qs-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add qs

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-2017-1000048?

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

Is CVE-2017-1000048 being exploited?

CVE-2017-1000048 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-2017-1000048 affect?

CVE-2017-1000048 affects qs. Severity is high (CVSS 7.5). the web framework using ljharb's qs module older than v6.3.2, v6.2.3, v6.1.2, and v6.0.4 is vulnerable to a DoS. A malicious user can send a evil request to cause the web framework crash.

How urgent is CVE-2017-1000048?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

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References

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