CVE-2026-102998

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Source
https://cve.org/CVERecord?id=CVE-2026-102998
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102998.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102998
Aliases
Downstream
Published
2026-09-30T20:09:13Z
Modified
2026-10-02T03:47:25Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
pypdf: Possible long runtimes when generating appearance streams
Details

pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF with form field values can cause pypdf/generic/_appearance_stream.py appearance-stream generation to repeat invariant selection-data work inside a loop when an application updates fields with flattening enabled, resulting in excessive runtimes and application unavailability. This issue is fixed in version 6.19.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-400"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102998.json"
}
References

Affected packages

Git / github.com/py-pdf/pypdf

Affected ranges

Type
GIT
Repo
https://github.com/py-pdf/pypdf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
959467a9b95be83e2dc5ae873ece5f371263ede7
Fixed
d62cb58d3988b291b0435eddfd118c4f8f6b6a46
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "6.19.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.26.0
1.27.0
1.27.1
1.27.10
1.27.11
1.27.12
1.27.2
1.27.3
1.27.4
1.27.5
1.27.6
1.27.7
1.27.8
1.27.9
1.28.0
1.28.1
1.28.2
2.*
2.0.0
2.1.0
2.1.1
2.10.0
2.10.1
2.10.2
2.10.3
2.10.4
2.10.5
2.10.6
2.10.7
2.10.8
2.10.9
2.11.0
2.11.1
2.11.2
2.12.0
2.12.1
2.2.0
2.2.1
2.3.0
2.3.1
2.4.0
2.4.1
2.4.2
2.5.0
2.6.0
2.7.0
2.8.0
2.8.1
2.9.0
3.*
3.0.0
3.1.0
3.10.0
3.11.0
3.11.1
3.12.0
3.12.1
3.12.2
3.13.0
3.14.0
3.15.0
3.15.1
3.15.2
3.15.3
3.15.4
3.15.5
3.16.0
3.16.1
3.16.2
3.16.3
3.16.4
3.17.0
3.17.1
3.17.2
3.17.3
3.17.4
3.2.0
3.2.1
3.3.0
3.4.0
3.4.1
3.5.0
3.5.1
3.5.2
3.6.0
3.7.0
3.7.1
3.8.0
3.8.1
3.9.0
3.9.1
4.*
4.0.0
4.0.1
4.0.2
4.1.0
4.2.0
4.3.0
4.3.1
5.*
5.0.0
5.0.1
5.1.0
5.2.0
5.3.0
5.3.1
5.4.0
5.5.0
5.6.0
5.6.1
5.7.0
5.8.0
5.9.0
6.*
6.0.0
6.1.0
6.1.1
6.1.2
6.1.3
6.10.0
6.10.1
6.10.2
6.11.0
6.12.0
6.12.1
6.12.2
6.13.0
6.13.1
6.13.2
6.13.3
6.14.0
6.14.1
6.14.2
6.15.0
6.16.0
6.16.1
6.16.2
6.17.0
6.18.0
6.18.1
6.2.0
6.3.0
6.4.0
6.4.1
6.4.2
6.5.0
6.6.0
6.6.1
6.6.2
6.7.0
6.7.1
6.7.2
6.7.3
6.7.4
6.7.5
6.8.0
6.9.0
6.9.1
6.9.2
v1.*
v1.17
v1.18
v1.19
v1.20
v1.21
v1.22
v1.23
v1.24
v1.25
v1.25.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102998.json"