CVE-2018-19787

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.1% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-12-02 10:00Z7 YR AGO

Last updated

2025-12-18 15:15Z10 MO AGO

Reserved

2018-12-02

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.2

Document digest

032fa39de4be68a6bfec0c0a12d9ab13faee62abc414fa4e65498ba716ee38f6

• usn.ubuntu.comUSN-3841-1https://usn.ubuntu.com/3841-1/vendor-advisoryx_refsource_UBUNTU
• lists.debian.org[debian-lts-announce] 20181210 [SECURITY] [DLA 1604-1] lxml security updatehttps://lists.debian.org/debian-lts-announce/2018/12/msg00001.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-3841-2https://usn.ubuntu.com/3841-2/vendor-advisoryx_refsource_UBUNTU
• github.comhttps://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20201126 [SECURITY] [DLA 2467-1] lxml security updatehttps://lists.debian.org/debian-lts-announce/2020/11/msg00044.htmlmailing-listx_refsource_MLIST