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CVE-2018-20483· NVD / CVE Program· CNA mitre

set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file's origin URL in the user.xdg.origin.url metadata attribute of the exten

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.65% (FIRST EPSS); higher than 50.5% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: wget (Alpine:v3.10) 1.20.1-r0; wget (Debian:12) 1.20.1-1; wget (openSUSE:Leap 15.0) 1.19.5-lp150.2.3.1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to wget (Alpine:v3.10) 1.20.1-r0; wget (Debian:12) 1.20.1-1; wget (openSUSE:Leap 15.0) 1.19.5-lp150.2.3.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file's origin URL in the user.xdg.origin.url metadata attribute of the extended attributes of the downloaded file, which allows local users to obtain sensitive information (e.g., credentials contained in the URL) by reading this attribute, as demonstrated by getfattr. This also applies to Referer information in the user.xdg.referrer.url metadata attribute. According to 2016-07-22 in the Wget ChangeLog, user.xdg.origin.url was partially based on the behavior of fwrite_xattr in tool_xattr.c in curl.

HighCVSS 7.8 · v3.0—No exploit Fix available
Published
Dec 26, 2018
Updated
Jun 16, 2026
EPSS
0.6% · 50th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
gnuwget

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gnu wgetbefore 1.20.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10wgetbefore 1.20.1-r01.20.1-r0
Debian:12wgetbefore 1.20.1-11.20.1-1
openSUSE:Leap 15.0wgetbefore 1.19.5-lp150.2.3.11.19.5-lp150.2.3.1
openSUSE:Tumbleweedwgetbefore 1.21.1-2.21.21.1-2.2
Red Hat:enterprise_linux:8::baseoscurlbefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoscurl-debuginfobefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoscurl-debugsourcebefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoscurl-minimal-debuginfobefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoslibcurlbefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoslibcurl-debuginfobefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoslibcurl-develbefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoslibcurl-minimalbefore 0:7.61.1-11.el80:7.61.1-11.el8
Red Hat:enterprise_linux:8::baseoslibcurl-minimal-debuginfobefore 0:7.61.1-11.el80:7.61.1-11.el8
SUSE:Linux Enterprise Module for Basesystem 15wgetbefore 1.19.5-3.3.11.19.5-3.3.1

Same product

gnu: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-13089GNU Wget: stack overflow in HTTP protocol handling
    59Plan
  • CVE-2016-4971GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted FTP resource.
    49Plan
  • CVE-2014-4877Absolute path traversal vulnerability in GNU Wget before 1.16, when recursion is enabled, allows remote FTP servers to write to arbitrary fi
    49Plan
  • CVE-2017-13090GNU Wget: heap overflow in HTTP protocol handling
    46Plan
  • CVE-2019-5953Buffer overflow in GNU Wget 1.20.1 and earlier allows remote attackers to cause a denial-of-service (DoS) or may execute an arbitrary code v
    41Plan
  • CVE-2024-38428url.c in GNU Wget through 1.24.5 mishandles semicolons in the userinfo subcomponent of a URI, and thus there may be insecure behavior in whi
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:wget1.20.1-r0 · Alpine:v3.10Package registry (OSV)
debian:wget1.20.1-1 · Debian:12Package registry (OSV)
opensuse:wget1.19.5-lp150.2.3.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:curl0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:curl-debuginfo0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:curl-debugsource0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:curl-minimal-debuginfo0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libcurl0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libcurl-debuginfo0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libcurl-devel0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libcurl-minimal0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libcurl-minimal-debuginfo0:7.61.1-11.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
suse:wget1.19.5-3.3.1 · SUSE:Linux Enterprise Module for Basesystem 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

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

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records