How severe is CVE-2018-1000883?

CVE-2018-1000883 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-1000883 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000883?

CVE-2018-1000883 affects Plug Project Plug. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000883?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1000883 published?

CVE-2018-1000883 was published on 2018-12-20 and last updated on 2026-06-17.

CVE-2018-1000883

CVE-2018-1000883 is a medium-severity vulnerability in Plug Project Plug with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Plug Project Plug
Published: 2018-12-20
Last modified: 2026-06-17

Description

Elixir Plug Plug version All contains a Header Injection vulnerability in Connection that can result in Given a cookie value, Headers can be added. This attack appear to be exploitable via Crafting a value to be sent as a cookie. This vulnerability appears to have been fixed in >= 1.3.5 or ~> 1.2.5 or ~> 1.1.9 or ~> 1.0.6.

Frequently asked questions

What is CVE-2018-1000883?: Elixir Plug Plug version All contains a Header Injection vulnerability in Connection that can result in Given a cookie value, Headers can be added. This attack appear to be exploitable via Crafting a value to be sent as a cookie. This vulnerability appears to have been fixed in >= 1.3.5 or ~> 1.2.5 or ~> 1.1.9 or ~> 1.0.6.
How severe is CVE-2018-1000883?: CVE-2018-1000883 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-1000883 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000883?: CVE-2018-1000883 affects Plug Project Plug. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000883?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000883 published?: CVE-2018-1000883 was published on 2018-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:plug_project:plug:*:*:*:*:*:*:*:*

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